UpStudy Homework Questions and Solutions
Latest Questions
-
Q:
c) \( (c+5)(c+5) \)
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Q:
429 Il rapporto tra la base e l'altezza di un re
tangolo è \( 7 / 9 \). Sapendo che il perimetro
288 m , calcola la misura di ciascuna dime
sione.
[ \( 63 \mathrm{~m} ; 81 \)
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Q:
Un trapezio isoscele, con l'area di \( 355 \mathrm{~cm}^{2} \), ha
la somma e la differenza delle basi di 71 cm e
15 cm . Calcola il perimetro.
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Q:
uaçăo \( -5 x-32 \leq 4-7 x \) é
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Q:
3. Points A and B are on the same electric field line. If an electron is released and moves from
A to \( \mathrm{B},(a \). \( ) \) is the field directed from A to B or from B to A ? \( (b \).\( ) Is the potential difference \)
between points A and B positive or negative? \( \bullet \bullet \)
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Q:
बाजार की सार्थकता किस पर निर्भर करती है।
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Q:
Actividad 5
La arena contenida en un reloj de arena ocupa un volumen de \( 567 \mathrm{~cm}^{3} \) y el fabricante indica que la
velocidad de caida de la arena es de \( 7 \mathrm{~cm}^{3} / \mathrm{s} \).
a) Averigua, ¿Cuánto tarda en haber la misma cantidad de arena en las dos partes del reloj.
b) ¿A los cuántos segundos de iniciado el conteo la otra parte del reloj contiene toda la arena?
c) Si registramos la variación del volumen de arena en la primera parte del reloj de acuerdo al tiempo
transcurrido, ¿Cuáles serían los datos que aparecerían en la siguiente tabla?
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Q:
Find the volume of the eolid of revolution formed by rotating the region bounded by
\( y=2 x+1, y=0, x=1 \) and \( s=2 \) ls rotated about the \( x-a x i e \)
A \( \pi\left(\frac{11}{3}+7\right) \) unitis
B. None of the options
C. \( \pi\left(\frac{29}{3}+7\right) \) unitis \( ^{3} \)
D. \( \pi\left(\frac{21}{2}-1\right) \) units \( ^{3} \)
E. \( -\pi\left(\frac{2 \pi}{3}-7\right) \) units \( ^{3} \)
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Q:
Mandy's energetic Uncle Bob loves roller coasters, and he wants to ride them alli One day,
Mandy prints out a list of all the roller coasters in the United States. After reading it with
Uncle Bob, they discover he has already ridden 93 of the coasters. There are still 400
coasters left to ride,
Which equation can you use to find the total number of roller coasters \( c \) on Mandy's list?
\[ \frac{c}{93}=400 \]
\[ 93 c=400 \]
Solve this equation for \( c \) to find the number of roller coasters on Mandy's list,
roller coasters
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Q:
Find the distance from the point (2, 3) to the line y = 1.
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Q:
Find the volume of the colid of
\( y=2 x+1, y=0, z=1 \) a
A \( \pi\left(\frac{11}{3}+7\right) \) units \( ^{3} \)
B. None of the options
C \( \pi\left(\frac{23}{3}+7\right) \) units \( ^{3} \)
D \( \pi\left(\frac{2 \pi}{2}-1\right) \) units
E \( -\pi\left(\frac{23}{2}-7\right) \) units \( { }^{3} \)
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Q:
Exercises 17 and 18
7. A number is less
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Q:
13. \( 7 \div \frac{4}{8}= \)
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Q:
Note : Attempt all questions.
(a) Read the passage and answer the questions that follow:
The task was not easy; yet it was not so difficult as I had
imagined, for our ancient epics and myths and legends,
which they knew so well had made them familiar with
the conception of their country, and there were al ways
some who had travelled far and wide to the great places
of pilgrimage situated at the four corners of India. Or
there were old soldiers who had served in foreign parts
in world war I or other expeditions. Even my references
to foreign countries were brought home to them by the
consequences of the great depression of 1930 s.
Q. (i) What task does the author refer to?
(ii) What had made the villagers familiar with the
conception of this country?
(iii) Which war does the author refer to?
(iv) Whereare the great places of pilgrimagesituated?
(v) Write the name of the author of the chapter from
which passage has been taken.
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Q:
Subtract: \( 46.7-1.65 \)
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Q:
4. Give the number of the highest energy level and the name of each of the following elements.
\( \begin{array}{lllll}\text { a. } \mathrm{Mg} & \text { b. I } & \text { c. } 3 d^{5} & \text { d. } \mathrm{Pu} & \text { e. Ho }\end{array} \)
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Q:
c) \( \frac{2 \cdot x+1}{5}=\frac{21}{9} \)
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Q:
D. \( 89 \% \)
E. \( 95 \% \)
6. A rectangular lot that measures 125 feet by 185 feet is
completely fenced. What is the length, in feet, of the
fence?
F. 310
G. 435
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Q:
Luego, realice el producto \( \boldsymbol{u} . \overrightarrow{\boldsymbol{v}} \), donde \( \boldsymbol{v} \) es la matriz obtenida en el item
anterior y el vector se representa como columna \( \vec{v}=(4,3,-5)^{\boldsymbol{r}} \).
Finalmente realice la comprobación utilizando GeoGebra \( u \) otro
programa computacional similar
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Q:
2. \( \left(x^{8}\right)^{4}= \)
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Q:
3. Give the symbol and the name of the following elements.
\( \begin{array}{lllll}\text { a. } 4 d^{9} & \text { b. } 2 p^{3} & \text { c. } 5 f^{7} & \text { d. } 7 s^{2} & \text { e. } 5 d^{6}\end{array} \)
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Q:
c) \( 64-12: 6+4 \cdot 26+289 \)
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Q:
\( 1 \quad 1 \)
ceccueración fecnologia
3) \( (4 * 5-10-512) * 3+12 a i z(16) \)
\( 5-4+7-3 *(4-5+10-3) \)
3) \( 1012-5+10-20 / 5-5 * 4-31 \)
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Q:
You are troubleshooting a printer that won't print. What is the first thing you should check?
o A) The ink levels
o B) The printer connection to the computer
C) The printer driver installation
D) The printer settings in the control panel
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Q:
\( 3 , \frac { 18 } { + 1 } \)
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Q:
14. What is the vertex of \( 4 y-12=\frac{1}{3 x-6} \)
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Q:
PRACTICE
Sketch the graph of each equation.
\( \begin{array}{ll}\text { 18. } y=\frac{3}{8} x+5 & \text { 19. } y=-\frac{1}{2}\end{array} \)
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Q:
\( x \) is an integer.
Write down all the solutions of the inequality \( 3<2 x+1<13 \)
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Q:
8. В правильной треугольной пирамиде сторона основания равна \( 6 \sqrt{3} \mathrm{~cm} \), а
высота \( -2 \sqrt{3} \) см. Найти длину бокового ребра пирамиды и угол наклона этого
ребра к плоскости основания.
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Q:
\( I=\int \frac{\sqrt{9-x^{2}}}{x^{2}} d x \)
A. \( -\frac{\sqrt{9-x^{2}}}{x}+3 \sin ^{-1}\left(\frac{x}{3}\right)+C \)
B. \( -\frac{\sqrt{9-x^{2}}}{x}-\sin ^{-1}\left(\frac{x}{3}\right)+C \)
C. \( \frac{\sqrt{9-x^{2}}}{x}+\sin ^{-1}\left(\frac{x}{3}\right)+C \)
D. None of the options
E. \( -\frac{\sqrt{9-x^{2}}}{x^{2}}-\sin ^{-1}\left(\frac{x}{3}\right)+C \)
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Q:
yields the same remainder when divided by \( (x-2) \) and \( (x+3) \). What value o
will satisfy the condition?
Goal
Your task is to apply the concept of remainder theorem in solving real life si
ation.
Role
You will act as a donor of face mask in Aurora Audience School heads a
teachers
Situation
You are the donor of face mask to the public schools in Aurora, and the numb
of face masks you are giving to Maria Aurora National High School for
teachers is expressed by a polynomial \( P(x)=p x 3+(p+3) x 2-9 x+30 \). It yie
the same remainder when divided by \( (x-2) \) and \( (x+3) \). What value of \( p \)
satisfy the condition?
Product/ Performance and Purpose
Answer the following questions:
1. Find \( p \) applying the concept of remainder theorem.
2. Using the value of \( p \) from question number 1, simplify \( P(x)=p x 3+(p+3) \)
- \( 9 x+30 \).
3. How many face masks will be given to Maria Aurora National High Scho
4. Check your answer using long division and synthetic division methods
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Q:
The student applies mathematical processes
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Q:
2) Trouvez la formule développée de l'alcéne de départ qui participe à la réaction donnée
par l'équation ci-dessous:
Alcène \( +\mathrm{HCl} \longrightarrow \mathrm{CH}_{3}-\mathrm{CH}_{2} \cdot \mathrm{CCl}^{-} \cdot \mathrm{CH}_{2}-\mathrm{CH}_{3} \)
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Q:
65. Resolve into factors: \( \left(\sum_{x, y, z} x\right)^{3}-\sum_{x, y, z} x^{3} \)
(a) \( (x+y)(y+z)(z+x) \)
(b) \( -(x+y)(y+z)(z+x) \)
(c) \( 3(x+y)(y+z)(z+x) \)
(d) \( -3(x+y)(y+z)(z+x) \)
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Q:
Actividad 5
La arena contenida en un reloj de arena ocupa un volumen de \( 567 \mathrm{~cm}^{3} \) y el fabricante indica que la
velocidad de caida de la arena es de \( 7 \mathrm{~cm}^{3 / s} \).
a) Averigua, ¿Cuánto tarda en haber la misma cantidad de arena en las dos partes del reloj.
b) ¿A los cuántos segundos de iniciado el conteo la otra parte del reloj contiene toda la arena?
c) Si registramos la variación del volumen de arena en la primera parte del reloj de acuerdo al tiempo
transcurrido, ¿Cuáles serían los datos que aparecerian en la siguiente tabla?
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Q:
c) \( 64-12: 6+4 \cdot 26+289 \)
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Q:
Your friend's laptop is not connecting to Wi-Fi. What should you advise them to do first?
o A) Restart the laptop
- B) Change the Wi-Fi password
- C) Check if the Wi-Fi is enabled
D) Uninstall the network drivers
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Q:
\( A B C D \)
and \( \angle A \)
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Q:
4) Lors de la réaction chimique d'un acide organique sur un alcool, l'hydrogène
n'appartenant pas au groupement -OH de l'eau formée et se trouvant dans celle-ci
provient de:
\( \begin{array}{llll}\text { a) L'alcool } & \text { b) L'acide } & \text { c) L'Ester } & \text { d) Pas de bonne réponse. }\end{array} \)
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Q:
\( x \) is an
Write o
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Q:
\( 45 \$ = \$ \)
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Q:
5. The oxygen saturation of a lake is found by dividing the
amount of dissolved oxygen the lake water currently has
per liter by the dissolved oxygen capacity per liter of the
water, and then converting that number into a percent.
If the lake currently has 6.4 milligrams of dissolved oxy-
gen per liter of water and the dissolved oxygen capacity
is 9.5 milligrams per liter, what is the oxygen saturation
level of the lake, to the nearest percent?
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Q:
2. Give the identifying square and name for the following elements.
\( \begin{array}{llll}\text { a. } \mathrm{Bi} & \text { b. } \mathrm{K} & \text { c. } \mathrm{Gd} & \text { e. } \mathrm{Rh}\end{array} \)
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Q:
1. ENTERTAINMENT
=rank, Gina, Judy, and Connie are
plitting their dinner bill. After tip, the total
po.08. How much does each owe if
1ey split the bill four ways?
\[ 3+30.08 \]
\[ \begin{array}{l}10.026 \\ 3\end{array} \]
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Q:
Hallar el punto del plano \( \pi: x+2 y-3 z-8=0 \)
que eote máa cerco del punto \( \rho(1,1,3) \).
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Q:
Use trigonometric substitution to evaluate
\( I=\int \frac{2}{\sqrt{1-4 x^{2}}} d x \)
A. \( \frac{1}{4} \sin ^{-1}(2 x)+C \)
B. \( -\sin ^{-1}(2 x)+C x \)
C. \( -\sin ^{-1}(2 x)-3 x+C \)
D. None of the options
E. \( \sin ^{-1}(2 x)+C \)
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Q:
2. \( \frac{1}{3} x^{3}-\frac{4}{5}=\frac{13}{40} \)
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Q:
3. You receive an email from an unknown sender with a suspicious attachment. What is your
best course of action?
\( \begin{array}{ll}\text { A) Open the attachment to see what it is } \\ \text { o } & \text { B) Delete the email without opening it } \\ \text { - } & \text { C) Forward it to your IT department } \\ \text { - } & \text { D) Reply to the sender asking for more information }\end{array} \)
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Q:
2) hokne
is Ayumome
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Q:
1) \( -5.5 \times-4.87 \)
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Q:
*10. Alice prepared \( 32 \ell \) of soup for a fun fair
She sold 11 C of soup in the morning.
She sold \( 9 \ell \) of soup in the afternoon.
How many litres of soup did she have lef
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Q:
\( A=\left(\begin{array}{ccc}1 & -4 & -4 \\ 2 & 2 & 0 \\ -1 & 1 & 2\end{array}\right) ; B=\left(\begin{array}{cc}6 & -1 \\ 4 & 5 \\ 3 & -4\end{array}\right) ; C=\left(\begin{array}{ccc}3 & 4 & 6 \\ 1 & -2 & 0\end{array}\right) ; D=\left(\begin{array}{ccc}6 & 7 & 0 \\ 3 & -2 & 4 \\ 0 & -1 & 0\end{array}\right) \)
Realice las operaciones algebralcas correspondientes segan \( U= \)
\( (2 B) \cdot(4 C)+(A-5 D)^{T} M \) obtenga la matriz \( U \).
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Q:
3.) \( (-12)-6= \)
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Q:
L.
Atack of 500 pieces of paper is 1.875
nches tall.
a. Diego guosses that each piece of
paper is O.O15, inches thick. Explain
how you know that Diego's answer is
not correct.
Compute the thickness of each
of paper. Show your reasoning.
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Q:
3. \( \left(\left(\left(\frac{3}{2}-\frac{5}{2}\right) \div \frac{2}{7}\right) \cdot \frac{3}{5}\right) \)
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Q:
5) \( \left(x-\frac{1}{4}\right)^{2} \)
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Q:
Sebuah Perusahaan ingin menghemat pemakaian energi dengan memasang sebuah alat
yang harganya Rp. 15 juta. Alat ini diperkirakan akan memberikan penghematan/keuntungan
Rp. 2 juta pada tahun pertama dan meningkat sebesar Rp. 500 ribu setiap tahun. Dengan
menggunakan tingkat bunga \( 12 \% \) per tahun, hitunglah berapa lama waktu yang dibutuhkan
agar keuntungan/penghematan tersebut impas dengan harga alat tersebut.
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Q:
Find the coordinates of the point that divides the line segment between points Q(2, 3) and R(8, 7) in the ratio 1:3.
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Q:
1. \( \frac{3}{5} x^{2}-\frac{2}{5}=\frac{2}{3} \)
-
Q:
Determina la longitud aproximada de los interva-
los de un conjunto de datos agrupados si el rango
es 40 y el número de intervalos es 4 .
-
Q:
\( 1 \frac { 1.5 } { 6 } = \frac { 10 } { p } \quad p = \)
-
Q:
Find the volume of the solid of revolution formed by rotating the region bounded by
\( y=2 x+1, y=0, x=1 \) and \( x=2 \) is rotated about the \( x \)-axis.
A. None of the optians
B. \( \pi\left(\frac{11}{3}+7\right) \) units \( ^{3} \)
C. \( \pi\left(\frac{23}{3}+7\right) \) units \( ^{3} \)
D. \( \pi\left(\frac{21}{2}-1\right) \) units \( ^{3} \)
E. \( -\pi\left(\frac{23}{3}-7\right) \) units \( ^{3} \)
-
Q:
1. Simplificar
a) \( \frac{\frac{2}{x-1}-\frac{3}{(x+1)^{2}}}{\frac{4}{x^{2}-1}} \)
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Q:
Diego is collecting dimes and nickels in a jar. He has collected \( \$ 22.25 \) so \( * 25 \) points
far. The relationship between the numbers of dimes and nickels, and the
amount of money in dollars is represented by the equation . \( 10 \mathrm{~d}+.05 \mathrm{n}= \)
22.25 (d, n\( ) \)
\( (0,445) \)
\( (0.50,435) \)
\( (1183,209) \)
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Q:
Lequel de ces deux acides est insaturé: \( \mathrm{C}_{17} \mathrm{H}_{33} \mathrm{COOH} \) (acide oléque) et \( \mathrm{C}_{7} \mathrm{H}+8 \mathrm{CC} \)
(acide stéarique).
\( \begin{array}{lll}\text { a) L'acide oléque b) L'acide stéarique c) Tous les deux acides d) Pas de by } \\ \text { réponse. }\end{array} \)
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Q:
6) В детский сад привезли 6 мешков с картофелем,
по 40 кг в каждом мешке, и 4 мешка с луком, по
25 кг в наждом мешке. На скольно килограммов
меньше привезли лука, чем яблон?
-
Q:
2.) \( 8-(-9)= \)
-
Q:
Find the Taylor polynomial of order 3 at \( a=\frac{\pi}{8} \)
A. None of the options
B. \( P_{3}, \frac{\pi}{8}(x)=1+4\left(x-\frac{\pi}{8}\right)-8\left(x-\frac{\pi}{8}\right)^{2}+\frac{64}{3}\left(x-\frac{\pi}{8}\right)^{3} \)
C. \( P_{3}, \frac{\pi}{8}(x)=1+4\left(x-\frac{\pi}{8}\right)+16\left(x-\frac{\pi}{8}\right)^{2}+\frac{\alpha 4}{6}\left(x-\frac{\pi}{8}\right)^{3} \)
D. \( P_{3}, \frac{\pi}{8}(x)=1+4\left(x-\frac{\pi}{8}\right)+8\left(x-\frac{\pi}{8}\right)^{2}+\frac{64}{3}\left(x-\frac{\pi}{8}\right)^{3} \)
E. \( P_{3}, \frac{\pi}{8}(x)=1-2\left(x-\frac{\pi}{8}\right)+6\left(x-\frac{\pi}{8}\right)^{2}-\frac{32}{3}\left(x-\frac{\pi}{8}\right)^{3} \)
-
Q:
3. \( \frac{41}{x}=\frac{5}{2} \quad x= \)
-
Q:
\( 12 \div 4=3 \)
L.
-
Q:
If 12 cars go, then 2 vans are
needed.
The pair \( \mathrm{c}=14 \) and \( \mathrm{v}=4 \) is a
solution to the equation.
If 6 cars go and 11 vans go,
there will be extra space.
10 cars and 8 vans isn't
enough to transport all the
students.
If 20 cars go, no vans are
needed.
8 vans and 8 cars are
numbers that meet the
constraints in this situation.
-
Q:
2. \( \frac{3.2}{9}=\frac{n}{36} \quad n= \)
-
Q:
Use \( z \)-substitution to evaluate
\( I=\int \frac{2 \sin x}{1-\cos 2 x} d x \)
A. \( -2 \ln \left|\tan \frac{x}{2}\right|+C \)
B. \( \ln \left|\tan ^{-1} \frac{x}{2}\right|+C \)
C. \( \ln \left|\cos \frac{x}{2}\right|+C \)
D. None of the options
E. \( \ln \left|\tan \frac{x}{2}\right|+C \)
-
Q:
23.) \( |x+3|>11 \)
-
Q:
a. \( \sqrt{121}=\square \)
-
Q:
1. What orientation of an electric dipole in a uniform electric field has the greatest electric
potential energy? What orientation has the least? (Let the system comprise both the electric
dipole and the sources of the uniform electric field.) -
-
Q:
1. \( \frac{k}{7}=\frac{32}{56} \quad k= \)
-
Q:
Evaluate using z-substitution
\( I=\int \frac{1}{2-\cos x} d x \)
A. \( \frac{2}{\sqrt{3}} \tan ^{-1}\left(\sqrt{3} \cos \frac{x}{2}\right)+C \)
B. \( 3 \tan ^{-1}\left(\sqrt{3} \tan \frac{x}{2}\right)+C \)
C. \( \frac{2}{\sqrt{3}} \tan ^{-1}\left(\sqrt{3} \tan \frac{x}{2}\right)+C \)
D. None of the options
E. \( \frac{2}{\sqrt{2}} \tan ^{-1}\left(\sqrt{3} \sin \frac{x}{2}\right)+C \)
-
Q:
8. A pail can hold 5 basins of water.
A basin can hold 10 jugs of water.
How many jugs of water can the pail hold?
-
Q:
It costs \( \$ 8 \) to rent a bicycle for the first hour. It costs \( \$ 5 \) for each
odditional hour.
Which expression can be used to determine the total cost of renting a
bicycle for any number of hours, \( h \) greater than 1 ?
\( \begin{array}{ll}\text { (A) } h \times(h+5) \\ \text { (i) } 5+8 h \\ \text { (c) } h \times(h+8) \\ \text { (D) } 8+5 h\end{array} \)
-
Q:
57. Запиши решение задачи сначала по действиям с пояс-
нениями, а потом с помощью числового выражения.
а) В зоопарке для обезьян приготовили 7 коробок
с бананами, по 10 кг в каждий коробке, и 5 ящиков
с яблоками, по 7 кг в каждом ящине. На сколько ки-
лограммов больше приготовили бананов, чем яблон?
б) В детский сад привезли 6 мешков с нартофелем,
по 40 кг в кажддм мешке, и 4 мешка с луком, по
25 кг в каждом мешке. На скольно килограммов
меньше привезли луна, чем яблок?
-
Q:
1.) \( (-5)-4=\frac{\square}{+-t+t} \)
-
Q:
Soit la matrice \( A=\left(\begin{array}{lll}0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array}\right) \).
1. Vérifier que \( A^{2}=A+2 I \). En déduire que \( A \) est inversible et déterminer son inverse.
2. Montrer que pour tout \( n \in N \), il existe deux réls \( u_{n} \) et \( v_{n} \) tels que \( A^{n}=u_{n} A+v_{n} I \).
On préciscra les relations de récurrence entre \( u_{n+1}, v_{n+1} \) et \( u_{n}, v_{n} \).
3. On pose \( \alpha_{n}=2 u_{n}+v_{n} \) et \( \beta_{n}=u_{n}-v_{n} \). Reconnaitre les suites \( \alpha \) et \( \beta \)
En déduire, pour tout \( n \in N, u_{n} \) et \( v_{n} \), puis \( A^{n} \) en fonction de \( n \).
-
Q:
Use trigonometric substitution to evaluate
\[ \begin{array}{l}I=\frac{\sqrt{9-x^{2}}}{x^{2}} d x \\ \text { A. }-\frac{\sqrt{9-x^{2}}}{x}+3 \sin ^{-1}\left(\frac{x}{3}\right)+C \\ \text { B. None of the options } \\ \text { C. } \frac{\sqrt{9-x^{2}}}{x}+\sin ^{-1}\left(\frac{x}{3}\right)+C \\ \text { D. }-\frac{\sqrt{9-x^{2}}}{x}-\sin ^{-1}\left(\frac{x}{3}\right)+C \\ \text { O. }-\frac{\sqrt{0-x^{2}}}{x^{2}}-\sin ^{-1}\left(\frac{x}{3}\right)+C\end{array} \]
-
Q:
с яблоками, по 7 кг в каждом ящике. На сколько
лограммов больше приготовили бананов, чем яблон
б) В детский сад привезли 6 мешков с картоф
по 40 кг в каждом мешке, и 4 мешка с лукол
25 кг в каждом мешке. На сколько килогра
меньше привезли лука, чем яблок?
58. Реши задачу. Предложи другой способ решения.
-
Q:
Find the missing number \( 1: 2=3: \)
A) 3
B) 6
C) 1
D) 2
-
Q:
Desandalla Gennpestengias
1. Halla el rango del siguiente conjunto de datos.
\( 328,219,406,720,858,934,107,466,732,626 \),
\( 311,799,325,986,432 \).
-
Q:
1. \( \frac{k}{7}=\frac{32}{56} \quad k= \)
-
Q:
11. Write the place values of the und
7. \( 156,253=\square: 10,346,924,625=\square \)
8. \( 645,102,069=\square: 11,25,10,584=\square \)
; \( 12.29,32,15,024=\square \) in the blanks using the corr
9. \( 15,613,007=\square \)
-
Q:
Uoe irigonometrio substitution to ovaluate
\( I=\int \frac{2}{\sqrt{1-4 x^{3}}} d x \)
A. \( \frac{1}{4} \sin ^{-1}(2 x)+C \)
B. \( -\sin ^{-1}(2 x)+C \)
C. \( -\sin ^{-1}(2 x)-3 x+C \)
D. None of the options
E. sin \( (2 x)+C \)
-
Q:
The ratio of an object's weight on Earth to its weight on Neptune is \( 5: 7 \). How much
would a person who weighs 150 pounds on Earth weigh on Neptune?
-
Q:
The drama club is printing t-shirts for its members. The printing company
charges a certain amount for each shirt plus a setup fee of \( \$ 40 \). There are
21 students in the drama club. If there are 21 students in the club, and the
\( t \)-shirt order costs a total of \( \$ 187 \), how much does each \( t \)-shirt cost?
\( \$ 5 \)
\( \$ 7 \)
\( \$ 11 \)
-
Q:
C. \( \frac{1}{\frac{x}{x+y}} \)
-
Q:
7 An expression for the area of a shape is \( 6(a+5) \mathrm{cm}^{2} \)
Work out
(a) the area when \( a=-2 \),
-
Q:
Question 18 ( 5 points)
A grocery store sells chili peppers at \( \$ 2.04 \) for a dozen. At this rate, what's the cost
per pepper?
-
Q:
Evaluate the integral by completing a square
\( I=\int \frac{1}{\sqrt{-x^{2}+4 x-3}} d x \)
A. None of the options
B. \( \sin ^{-1}(x-2)+x+C \)
C. \( -\sin ^{-1}(x-1)+C \)
D. \( \cos ^{-1}(x-2)+C \)
E. \( \sin ^{-1}(x-2)+C \)
-
Q:
2) cilcule
lobos
-
Q:
The equation \( 201.50=f+650(21) \) represents the cost of printing the shirts
at a second printing company. What does \( f \) represent?
The number of students
The cost of each \( t \)-shirt
The set up fee
The total cost
-
Q:
14. \( 1 \frac{4^{3}+4^{3}+4^{3}+4^{3}}{2^{3}+2^{3}}= \)
A. 2
B. 4
C. 8
D. 16
-
Q:
uuestion \( 1 / \) ( 5 points)
During a paint sale, a hardware store sold 33 gallons of flat paint and 57 gallons of
high-gloss paint. What's the ratio of gallons of high-gloss sold to the total gallons
sold?
A) \( 33: 57 \)
C) \( 57: 90 \)
D) \( 57: 33 \)
D)
-
Q:
- Responde:
- iQué relación encuentras entre pobla-
ción, pobreza y transgénicos?
Competencia argumentativa
- Opina.
es sufideras que la información del cuadro
sobre la utilidad o no no de los una idransea clánicos?
- iCrees que basta con la buena voluntad
de algunas compañ́as de países desarro-
llados para que los beneficios de los trans-
génicos beneficien a la población más po-
bre del mundo? Por qué?
Competencia propositiva
- Infórmate más a fondo sobre lo que son los
transgénicos y elabora un breve escrito a fa-
vor o en contra de los mismos.
-
Q:
(a) the area when \( a=-2 \),
-
Q:
Evaluate using partial fractions
\( I=\int_{1}^{\infty} \frac{x-1}{(x+1)\left(x^{2}+1\right)} d x \)
A. \( \ln \sqrt{2} \)
O. None of the options
C. \( \ln \frac{2}{\sqrt{2}} \)
D. \( \ln \frac{1}{\sqrt{2}} \)
E. \( \ln \frac{2}{\sqrt{2}}+1 \)
-
Q:
II. Write the place values of the underlined digits in the number
7. \( 156,253=\square: 10.346, \underline{2} 24,625=\square \)
8. \( 645,102,069=\square: 11.25,10,584=\square \)
-
Q:
e) \( \frac{1}{10} \)
-
Q:
How should you write the proportion \( 9: 36=10: 40 \) using words?
A) 9 is to 36 as 40 is to 10
B) 36 is to 9 as 10 is to 40
C) 9 is to 36 as 10 is to 40
D) 9 is to 10 as 36 is to 40
-
Q:
A linear revenue function is \( R=38.67 x \).
(a) What is the slope \( m \) ?
(b) What is the marginal revenue \( \overline{M R} \) ?
What does the marginal revenue mean?
If the number of units sold is increased by this amount, the revenue increase
Each additional unit sold decreases the revenue by this many dollars.
(c) What is the revenue received from selling one more item if 43 are currently beir
\( \$ \square \) inits sold yields this many dollars in revenue.
What is the revenue received from selling one more item if 82 are being sold?
\( \$ \square \)
-
Q:
e) \( -2(2 r+7 s-3 t) \)
-
Q:
15. \( \frac{4}{9}+\frac{6}{18}+\frac{4}{3}=\frac{1}{3} \)
-
Q:
2) CAL
-
Q:
Evaluate the integral using partial fractions
\( I=\int \frac{10 x^{2}+4 x+2}{\left(1+4 x^{2}\right)(x+2)} d x \)
A. \( \frac{1}{4} \ln \left|1+4 x^{2}\right|+2 \ln |x+2|+C \)
B. \( -\frac{1}{4} \ln \left|1+4 x^{2}\right|+\ln |x+2|+C \)
C. \( \frac{1}{2} \ln \left|1+4 x^{2}\right|+4 \ln |x+2|+C \)
D. None of the options
E. \( -\frac{1}{2} \ln \left|1+4 x^{2}\right|-4 \ln |x+2|+C \)
-
Q:
3 Use the inverse matrix method to solve the following system:
\[ \begin{array}{l}2 x+y=2 \\ x+2 y=3\end{array} \]
-
Q:
REMEMBER
5. A school has a goal of raising \( \$ 6,000 \) to buy new sports equipment. Students raise \( \$ 3,535 \)
ty having bake sale and \( \$ 2,382 \) by having a car wash.
a. Estimate the total amount of money the students have raised by rounding each value to the
nearest thousand.
b. Estimate the total amount of money the students have raised hy roundingeach value to the
nearest hundred.
How should the principal round to estimate how much more moncy the school noods to meet
its goal? Explain.
-
Q:
\( \operatorname { Li } _ { E } ^ { A B } \quad \int _ { A } ^ { B } \quad b _ { C } ^ { B } \)
-
Q:
Сравните числа:
а) \( -13,58 \) и \( -83,58 \); б) -40556 и-4055,6; в) \( -8 \frac{1}{15} \quad \) r \( 11 ;-7 \frac{12}{23} \quad \) г) \( -2 \frac{23}{48} \)
-
Q:
How should the principal round to estimate how much more money the school needs to meet
its goal? Explain.
-
Q:
Evaluate this integral using substitution
\( I=\int_{0}^{\infty} e^{-2 x} d x \)
A. \( \frac{1}{5} \)
B. 2
C. \( \frac{1}{2} \)
D. None of the options
E. 6
-
Q:
\( \begin{array}{ll}\text { a) } \frac{52}{10} & \text { d) } \frac{77}{1000} \\ \text { b) } \frac{52}{100} & \text { e) } \frac{7}{10}\end{array} \)
-
Q:
c. How should the principal round to estimate how much more money the school needs to
its goal? Explain.
-
Q:
K.
A roll of ribbon was 12 meters long. Diego
cut a pieces of ribbon that were 0.4 meter
each to tie some presents. He then used
the remaining ribbon to make some
wreaths. Each wreath required 0.6 meter.
For each question, explain your reasoning.
a. How many meters of ribbon were
available for making wreaths?
How many wreaths could Diego
make with the available ribbon?
-
Q:
1) ix \( ^{2}, \mathrm{~F}(0,-16) \) and \( G(-8,-4) \) are the endpoints of a line segment. What is the midpoint \( M \)
that line segment?
1)
\( M=( \) Write the coordinates as decimals or integers.
Submit
-
Q:
а) \( -13,58 \); б) 9,45 ; в) \( \frac{2}{15} ; \) г) \( \left|\frac{2}{19}\right|{ }_{\text {Задание } 3} \)
-
Q:
A student received an \( 82 \% \) on an exam. If there were 50 questions on the exam,
which ratio would show the number of questions answered correctly to the total
number of questions?
-
Q:
Burdock seeds have spines, so they can
\( \begin{array}{ll}\text { a. float on water. } & \text { b. travel by wind. } \\ \text { c. stick to animal fiur } & \text { d. be eaten by animals. }\end{array} \)
-
Q:
Question 4 (continued)
(b) Solve the following equation for \( m: m=\frac{\sqrt[2]{m^{4} p^{2}}}{q} \)
-
Q:
4) \( A \) line segment has the endpoints \( B(8,6) \) and \( C(10,4) \). Find the coordinates of its
midpoint \( M \).
(1) Write the coordinates as decimals or integers.
\( M= \)
-
Q:
Comment appelle-t-on la réaction chimique de préparation d'un savon ef explíy
comment elle se fait.
Lors de la réaction chimique d'un acide organique sur un aleool, I'hytroy
n'appartenant pas au groupement -OH de l'eau formée et se trouvant dans cell
provient de:
\( \begin{array}{llll}\text { a) L'alcool } & \text { b) L'acide } & \text { c) L'Ester } & \text { d) Pas de bonne réponse. }\end{array} \)
-
Q:
7. In each of these sentences, one word is underlined.
Tick ( \( \checkmark \) ) the box beside the correct meaning of the underlined word.
a Gravity causes an object to fall.
increases its mass
makes it have weight
makes it happen
pulls it down
8. Calculate the weight of a 55 kg person on Earth.
10. Write down the mass of a 55 kg person on Earth.
11. Write down the mass of a 55 kg person on the Moon.
12. A television camera has a weight of 20 N on the Moon. Calculate its mass.
-
Q:
Find the missing number __- \( 7=12: 21 \)
-
Q:
2. Represente as frações na form
decimal.
\( \begin{array}{ll}\text { a) } \frac{52}{10} & \text { d) } \frac{77}{1000}\end{array} \)
-
Q:
Find the market equilibrium point for the following demand and supply functions.
Demand: \( p=-4 q+306 \)
Supply: \( \quad p=6 q+3 \)
-
Q:
a. \( \frac{2 x+2}{x+1} \)
-
Q:
a) \( 65-15: 5=65-3-62 \)
-
Q:
sono uno i \( \frac{3}{5} \) dell'altro.
(77) In un triangolo un angolo misura \( 56^{\circ} \) e la differen-
za degli altri due è di \( 18^{\circ} \). Calcola la misura degli
angoli del triangolo.
-
Q:
4. \( (0,-8) \) and \( (3,2) \)
-
Q:
What are the means of the following proportion?
\( 3 / 15=12 / 60 \)
-
Q:
The expression \( 7(y-5) \) is equivalent to
which of the following expressions?
A \( 7 y-35 \)
B \( -35+7 y \)
C \( 2 y \)
D \( 7 y-5 \)
-
Q:
1356 Fanny arbetar på en pizzeria. På söndagarna
tjänar hon \( 160 \mathrm{kr} / \mathrm{h} \), på lördagar \( 140 \mathrm{kr} / \mathrm{h} \)
och övriga dagar \( 110 \mathrm{kr} / \mathrm{h} \).
En vecka fick hon 3340 kr för totalt
25 timmar.
a) Vad står variablerna \( x \) och y för i
ekvationen
140x+160y \( +990=3340 \) ?
b) Skriv ytterligare en ekvation som
innehåller \( x \) och \( y \).
c) Lös ekvationssystemet.
d) Hur många timmar arbetade hon på
söndagen?
-
Q:
a) \( 65-15: 5=\square \)
-
Q:
Question 10 ( 5 points)
How else can the ratio \( 14: 1 \) be written?
-
Q:
5. Susan poured \( 12 \ell \) of oil from a tank into Container
and 18 ef oil into Container \( B \).
There were \( 64 \ell \) of oil left in the tank.
-
Q:
пользуя рисунок данного прямоугольника \( A B C D \), определи модупь векторов.
вестно. что дпина сторон прямоугольника \( A B=6, B C=8 \).
A
-
Q:
3. Maple seeds travel by wind because they are ......... d. smooth seeds.
a. light seeds, b, spiny seeds, c. heavy seeds.
-
Q:
12. \( 1+2+3+4+\ldots \ldots \ldots \ldots . .+200=\ldots \)
A. 10.100
B. 20.100
C. 200.100
D. 1.000 .100
-
Q:
VII. Post Test
Use the 4 -step plan to solve the problems.
1. The price of electricity is \( P 6.50 \) per kilowatt hour. If a television set ran from
7:30am to 12;00pm, how much electricity was consumed?
2. Mother gave half of her moriey to her dauighter and halfof her remaining money
to her son. If she has exactly P23. 50 left, how much money did she have at first?
3. A kilo of grapes costs F200.50. How much will you pay if you buy 3 kilos?
4. Crio consumed 1.956 liters of water in one day. How many liters of water can
Crio consume in one week?
5. If \( 3.45 \times 5613=19364.85 \), what is the product of 3.450 and 5613 ?
-
Q:
Theresa worked 9 hours on Monday and 7 hours on Wednesday. Her total pay was
\( \$ 156.00 \). What is her rate per hour?
-
Q:
\( \because x - 0 x - 0 x - 2 \)
-
Q:
a) \( 387: 9=43 \)
-36
-27
-27
-
Q:
Of the employees who work at Stalling Printing, \( 90 \% \) attended the safety procedures
meeting. If 63 employees attended the meeting, how many employees work at
Stalling Printing?
-
Q:
1. Halla el rango del siguiente conjunto de datos
\( 328,219,406,720,858,934,107,466,732 \),
\( 311,799,325,986,432 \).
-
Q:
в) \( (25,82+15,49+8,18): 4,949 \)
-
Q:
1. Izračunaj.
a) \( 387: 9=43 \)
\( \frac{-36}{27} \)
ináa.
iku osobe \( \quad \begin{array}{l}\text { d) } 208: 4=52\end{array} \)
-
Q:
(b) \( 14.4 \div \ldots \ldots \ldots \ldots \ldots \ldots \ldots=1.2 \)
-
Q:
Yuesciui, io puinis)
Percent means "per
-
Q:
a) \( -3+8 m n^{2}-5 m^{2} n^{3}+9 m^{3} n^{4} \)
b) \( -16 s t+3 s^{3} t^{3}-5+22 s t^{2} \)
c) \( 8 m^{2} n-3 m^{3} n^{2}-7+4 m n \)
d) \( x-4 x^{3}+7 x^{2}+10 x^{4}-6 \)
e) \( 4 m^{4}-5 m^{6}+2 m-9 m^{3}+11 \)
f) \( -10-a^{4} b^{3}+2 a^{2} b^{5}+3 a^{3} b^{4}-6 a b^{6} \)
g) \( -6 x^{8} y^{2}+4 x^{10}-9 x^{4} y^{6} \)
h) \( m^{4}-5 m+6 m^{3}-9 m^{2}+6 \)
i) \( 6 m n^{2}-5 m^{3}+2 m^{2} n+n^{3} \) con respecto a \( m \)
j) \( -17 x^{4} y+5 x^{5}+6 x^{2} y^{4}-9 x y^{2}+6 y^{3} \)
-
Q:
a) \( \frac{52}{10} \)
-
Q:
If you have a rewards card at Biggby, you earn a free drink after every 12 drinks you buy. Can the
total amount of money spent at Biggby after ordering \( n \) drinks be considered arithmetic? Why or
why not?
-
Q:
5) Determine a lei de formação, \( f(x)=a x^{2}+b x+c \), da função.
-
Q:
Kent worked in the housewares section of a department store. This year he set a
record high for vacuum sales with 567 vacuums sold. The previous high was last year,
when 540 vacuums were sold. What is the percent of increase in sales from last year
to this year?
-
Q:
Adam bought \( a \) apples for \( \$ 1.50 \) each
and \( b \) oranges for \( \$ 2 \) each. He spent
\( 1.50 a+2 b \) dollars. What does \( 2 b \)
represent?
A the number of apples bought
B the amount he spent on apples
C the amount of both apples and oranges
D. the amount he spent on oranges
-
Q:
A company distributes college logo sweatshirts and sells them for \( \$ 45 \) each. The total cost function is linear, and the total cost for 70 sweatshirts is
\( \$ 4136 \), whereas the total cost for 220 sweatshirts is \( \$ 5785 \).
(a) Write the equation for the revenue function \( R(x) \).
\( R(x)=\square \)
(b) Write the equation for the total cost function \( C(x) \).
\( C(x)=\square \)
(c) Find the break-even quantity.
\( x=\square \)
-
Q:
3. simplify \( \frac{x+7}{x-7}-\frac{5 x+35}{x^{2}-49} \)
-
Q:
Question 5 ( 5 points)
Lavina wants to buy a rocking chair for \( \$ 160 \). She'll pay \( 10 \% \) down and pay the rest
in six monthly installments. What will be the amount of each monthly payment?
A) \( \$ 26 \)
B) \( \$ 27 \)
C) \( \$ 24 \)
D) \( \$ 16 \)
-
Q:
12. \( 1+2+3+4+\ldots \ldots \ldots \ldots . .+200= \).
A. 10.100
B. 20.100
C. 200.100
D. 1.000 .100
-
Q:
1. i) Three numbers are in G.P. Their product is 64 and sum
is \( 124 / 5 \) find them.
ii) If \( a, b, c \) are in GP and \( a^{x}=b^{y}=c^{2} \), prove that \( 1 / x+1 / z=2 / y \).
-
Q:
4. \( |-29| \)
-
Q:
How much water was left in the tank?
-
Q:
Que número na forma deci
Gustavo deve escrever?
-
Q:
Dessond.la sonnpetiengias
1. Halla el rango del siguiente conjunto de datos.
\( 328,219,406,720,858,934,107,466,732,6 \)
\( 311,799,325,986,432 \).
-
Q:
1. Show that :
\( (\sqrt{3}+\sqrt{2}) 3+(\sqrt{3}-\sqrt{2}) 3=18 \sqrt{3} \)
-
Q:
How else can the ratio \( 4 / 5 \) be written?
-
Q:
What is 6:12 in simplest form?
-
Q:
1. \( \frac{x^{2}}{8}+\frac{y^{2}}{4}=1 \)
2. \( \frac{x^{2}}{16}+\frac{(y-2)^{2}}{25}=1 \)
3. \( (x-1)^{2}+(2 y-2)^{2}=4 \)
-
Q:
There were 500 ₹ of water in a tank.
Mr Tan used 199 ? of water on Mondoy and 156 ₹ of wat
on Tuesday.
-
Q:
4. \( |-20| \)
-
Q:
34. Uma pirâmide quadrangular regular, de 7 cm de
altura, tem as arestas da base medindo 2 cm
Com relação à essa pirâmide, determine a:
a) medida do apótema da base;
b) medida do apótema da pirâmide;
c) medida da aresta lateral;
d) área da base;
e) área lateral;
f) área total.
-
Q:
Solve for the variable in \( 7 / 28=25 / x \)
-
Q:
1. If \( a=b^{c}, b=c^{a} \), and \( c=a^{b} \), then \( a b c=1 \)
(True/False)
-
Q:
4. Quyidagi bichiziq formaning matritsasini toping:
\( \varphi(x, y)=\mathrm{x}_{1} \mathrm{y}_{1}+\mathrm{x}_{2} \mathrm{y}_{2}+\ldots .+\mathrm{x}_{\mathrm{n}} \mathrm{y}_{\mathrm{n}} \)
5. Quyidagi to'g'ri chiziqlarning o'zaro vaziyatini aniqlang:
\( x-2 y+3 z+4=0 \quad x \quad \) va \( \quad x+y+z+1=0 \)
-
Q:
If \( a+5=b+3 \) and \( a+5=12 \), then \( b+3= \)
-
Q:
Steve can complete the 100 m dash in 10 seconds while Paul can run it in 1 ?
seconds. How does Steve's time compare to Paul's?
-
Q:
8. \( (-12)+(-2)= \)
-
Q:
\( \sqrt[ 4 ] { 2 } , \sqrt[ 5 ] { 2 } \sqrt[ 3 ] { 2 } \)
-
Q:
There were \( 500 \ell \) of water in a tank.
Mr Tan used \( 199 \ell \) of water on Monday and 156 \& of water
on Tuesday.
-
Q:
Transitive Property of Equality
If \( a+5=b+3 \) and \( a+5=12 \), then \( b+3=\square \)
-
Q:
A company charting its profits notices that the relationsthip between the mumber of units sold, s, and the profit, P, is linear. If 190 units sold results in
\( \$ 2380 \) profit and 240 units sold results in \( \$ 4980 \) profit, write the profit function for this company.
\( P=\square \)
Find the marginal profit.
\( \$ \square \)
-
Q:
\begin{tabular}{l} a) \( 5^{x}=125 \) \\ bl \( 10^{x}=10000 \) \\ c) \( 9^{x}=243 \) \\ d) \( \left(\frac{1}{2}\right)^{x}=\frac{1}{32} \) \\ \hline e) \( \left(\frac{1}{4}\right)^{x}=0,25 \) \\ \hline fl \( 4^{x}=\frac{1}{64} \) \\ \hline\end{tabular}
-
Q:
3. Determine \( d y / d x \), where \( x=a(\theta+\sin \theta) \) and \( y=a \)
\( (1-\cos \theta) \)
-
Q:
THEME Cause and Effect A solution with a pH of 3 is mixed with another solution.
The result is a solution with a pH of 7 . Describe what you can infer about the pH of the
unknown solution and explain your reasoning.
-
Q:
Ratienalise \( \frac{5}{9-4 \sqrt{2}} \)
-
Q:
\( a_{1}=-1 \) e \( a_{2}=2 \). Escreva essa sequência até \( \circ 7^{a} \) os \( d \)
-
Q:
\( \frac { 2 } { 2 } , \frac { 4 } { 5 } , \frac { 6 } { 8 } , \frac { 8 } { 11 } \)
-
Q:
If \( 6+2=4+4 \) and \( 4+4=8 \), then \( 6+2=8 \)
\( \begin{array}{l}\text { A) Transitive Property of Equality } \\ \text { B) Reflexive Property of Equality } \\ \text { C) Distributive Property of Equality } \\ \text { D) Symmetric Property of Equality }\end{array} \)
-
Q:
b) \( \frac{6}{9}=\frac{18}{2 \cdot x} \)
-
Q:
Sarah is hiking on a trail near her home. She traveled 5 miles before stopping for a break. After the break, Sarah plans on increasing her speed to
3 miles per hour. Which equation models the total distance, \( D \), Sarah travels after hiking for an additional \( h \) hours?
A. \( D=3 h-5 \)
B. \( D=3 h+5 \)
C. \( D=3(h-5) \)
D. \( D=5 h+3 \)
-
Q:
How many more litres of water can the basin hold than the
bottle?
-
Q:
How many yards are in 7 miles?
-
Q:
(16) \( (2+7)^{2}-81+1= \)
-
Q:
Hou mony mone litres of water con the basin hold than the
batile?
-
Q:
If a thermometer indicates 40 degrees Celsius, what's the temperature in degrees
Fahrenheit?
-
Q:
\( \left.10^{\circ}\right) \)
ante
-
Q:
Heather paid \( \$ 2,022.30 \) for a computer. If the price paid includes a \( 7 \% \) sales tax, which of the following equations can be used to determine the price of
the computer after tax?
(Let \( x \) represent the cost of the computer and \( y \) represent the total cost after tax.)
A. \( y=1.7 x \)
B. \( y=0.93 x \)
C. \( y=x+7 x \)
D. \( y=1.07 x \)
-
Q:
Rationalise \( \frac{-5}{9-4 \sqrt{2}} \)
-
Q:
i) If \( x+y=\begin{array}{ll}5 & 2 \\ 0 & 9\end{array} \) and \( x-y=\begin{array}{cc}3 & 6 \\ 0 & -1\end{array} \) then
calculate \( x \) and \( y \).
-
Q:
A. \( \quad 50 \)
-
Q:
A merchant bought 30 dozen pairs of gloves. How many individual gloves did the
merchant buy?
-
Q:
ationalise \( \Rightarrow 9-4 \sqrt{2} \)
-
Q:
\( 12 \% \) of \( \$ 62 \)
-
Q:
What's the conversion factor used to convert inches to yards?
-
Q:
\( a_{1}=-1 \) e \( a_{2}=2 \)
-
Q:
6. Obtener la euvacion de la recta qué pasa por
el punto \( P_{0}(1,0,1) \) y corta a lap rectan
\( L_{1}=\{(-1,1,1)+t(2,0,1) / \epsilon \in R\} \) y \( z: x-y+z=1 \) :
\( x+2 y-z=0 \)
-
Q:
Identify the property of equality used to justify the statement.
\( x+3=x+3 \)
\( \begin{array}{ll}\text { A) Symmetric Property of Equality } \\ \text { B) Trannifive Property of Equality } \\ \text { C) Reflexive Property of Equality } \\ \text { D) Distributive Property of Equality }\end{array} \)
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Q:
La ecuación que se presenta a continuación representa la combustión
del alcohol etílico.
\[ \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}_{(1)}+3_{2}(\mathrm{~s}) \quad \Delta \quad 2 \mathrm{CO}_{2(8)}+3 \mathrm{H}_{2} \mathrm{O}_{\text {(s) }} \]
Las masas molares \( (\mathrm{g} / \mathrm{mol}) \) de \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(46), \mathrm{O}_{2}(32), \mathrm{CO}_{2}(44) \) y \( \mathrm{H}_{2} \mathrm{O}(18) \). Se
tiene un mechero de alcohol que es encendido y simultaneamente
cubierto con una campana transparente en la que no hay entrada ni salida
de aire. Si dentro de la campana hay 3 moles de etanol y 3 moles de \( \mathrm{O}_{2} \), al
terminar la reacción la cantidad de \( \mathrm{CO}_{2} \) y \( \mathrm{H}_{2} \mathrm{O} \) producida será
respectivamente. (Realiza las operaciones correspondientes para que la
respuesta sea válida)
A. 88 g 54 g
B. 2 g y 3 g
C. 46 g y 96
D. 44 g y 18 g
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Q:
1. \( \frac{3}{5} x^{2}-\frac{2}{5}=\frac{2}{3} \)
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Q:
Se \( \frac{1}{4} x^{2}-5 x+8=0 \), entāo de acordo com a
fórmula quadrática:
\[ x=\frac{5 \pm \sqrt{17}}{\frac{1}{2}} \]
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Q:
Soit la matrice \( A=\left(\begin{array}{lll}0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array}\right) \)
1. Vérifier que \( A^{2}=A+2 f \). En déduire que \( A \) est inversible et déterminer son inverse.
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Q:
3. \( \frac{x_{1}-1}{2}=\frac{x_{2}+2}{3}=\frac{x_{3}}{-1} \) to'g'ri chiziq va \( 3 x_{1}-2 x_{2}+x_{3}-1=0 \) tekislikning kesishish
\( \quad \) nuqtasini toping.
4. Quyidagi bichiziq formaning matritsasini toping:
\( \varphi(x, y)=\mathrm{x}_{1} \mathrm{y}_{1}+\mathrm{x}_{2} \mathrm{y}_{2}+\ldots .+\mathrm{x}_{\mathrm{n}} \mathrm{y}_{\mathrm{n}} \)
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Q:
Sipho's taxi company charges R56,00 plus an additional R6,00 per
kilometre for a trip. Madeleine's taxi company charges R8,00 per
kilometre plus an additional R30,00 for a trip. A linear relationship
exists between the cost in rand, \( y \), and the number of kilometres driven,
\( x \). The cost is dependent on the number of kilometres driven. The
distance, \( x \), at which the cost will be the same for both companies, is
Select one:
a. 134 km .
b. 26 km .
c. 56 km .
d. 13 km .
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Q:
8. Извършете действията
а) \( 17,5-0,5 \cdot 2,4 \)
г) \( 0,4 \cdot \frac{5}{8}+0,75 \)
Pешение
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Q:
Doña Josefa, habitante de una comunidad ha criado gallinas sin necesidad de tenerlas cautivas. Esto le ha ocasionado una
serie de problemas, por lo que decide construir un gallinero en la parte posterior de su casa, Sus ahorros sólo le alcanzan para
comprar 50 metros lineales de tela ciclónica para cercarlo. Si el terreno donde desea construir el gallinero es de \( 20 \times 40 \) metros,
¿Qué dimensiones deberá tener un gallinero (dónde utilice todo el material que compró) para que éste abarque la MAYOR área
posible y así encerrar la mayor cantidad de gallinas? Observa que inicialmente el gallinero puede ser rectangular de diferentes
dimensiones.
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Q:
Question 14 (5 points)
The prefix kilo in the metric system means
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Q:
\( \frac{3}{7} \) of \( \$ 42 \)
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Q:
If a sports shop sold 1,500 dozen golf balls last week, how many individual golf balls
did the shop sell?
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Q:
2. \( \frac{1}{3}+\frac{2}{6}=\frac{2}{6}+\frac{1}{3} \)
Propiedad
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Q:
d) \( \neq=(x+1 \)
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Q:
What's the perimeter of a square with a side measurement of 6 in.?
A) 12 in.
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Q:
Walt is mixing fruit punch for a party. He combines 1 gallon 2 quarts 3 pints of
orange juice, 1 gallon 3 quarts 7 pints of pineapple juice, and 1 gallon 3 quarts 3
pints of ginger ale. What's the total liquid measure of the punch?
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Q:
Your computer is running extremely slow. Which of the following is the most likely cause?
\( \begin{array}{ll}\text { A) Too many background applications running } \\ \text { B) A new wallpaper } \\ \text { - } & \text { C) High battery percentage } \\ \text { D) Latest software updates }\end{array} \)
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Q:
\( 77 \% \) of 60
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Q:
Graded Quiz: Measurement
What's the sum of 6 feet 10 inches and 8 feet 9 inches?
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Q:
a) \( \frac{4}{5}=\frac{x-1}{25} \)
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Q:
Role
Consider yourself as an employee of that well-known restaurant Audier
ager of the restaurant
Situation
The supply of pako to that well-known restaurant is represented by
equation \( \mathrm{P}(\mathrm{x})=\mathrm{x} 3-9 \times 2+23 \mathrm{x}-15 \), (where x is the number of months)
the employee, after how many months to wait such that the supply bec
Product/ Performance and Purpose
Answer the following guide questions:
1. In what months (ordinal number) the "pako" supply becomes zero?
2. How many times the supply becomes zero?
3. What is the equation of the polynomial in factored form?
4. How many months to wait such that the supply becomes stable?
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Q:
\( 1< \) Solve by the method of your choice.
\[ \begin{array}{l}5 x-3 y=3 \\ 2 x+y=10 \\ \text { A. The solution set is }\{\} \text {. (Type an ordered pair }) \\ \text { B. There are infinitely many solutions. The solution set is }\{(x, y) \mid 5 x-3 y=3\} \text { or }\{(x, y) \mid 2 x+y=10\} \text {. The solution set is } \varnothing \text {. }\end{array} \]
Correct choice below and, if necessary, fill in the answer box to complete your choice.
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Q:
\( 77 \% \) of 60
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Q:
The Smiths took out a 30 -year mortgage. How many monthly payments will they
have to make on this mortgage?
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Q:
B) \( \frac{2}{3}+\frac{1}{3}= \)
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Q:
Jose a computer manufacturer has the total cost function \( C(x)=74 x+3600 \) (in dollars) and the total revenue function \( R(x)=374 x \) (in dollat
(a) What is the equation of the profit function \( P(x) \) (in dollars) for this commodity?
\( P(x)=\square \)
(b) What is the profit (in dollars) on 360 items?
\( P(360)=\$ \square \)
(c) How many items must be sold to avoid losing money?
\( x=\square \)
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Q:
The gross weight of a package and its contents is 11 pounds 5 ounces. If the
packaging weighs 1 pound 15 ounces, what's the net weight of the contents?
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Q:
3. Which of the following statements about
personal protective equipment (PPE) is
false?
A. Wearing PPE during an arc can help
prevent burns to the skin and eyes.
B. PPE includes clothing and equipment.
C. Earplugs are not considered PPE and
are unnecessary.
D. PPE ratings are determined by the
specific tasks of a given project and the
general work environment.
4. True or False? An aluminum ladder
should not be used when working around
electrical wiring.
5. True or False? Blockout procedure is another
name for lockout procedure.
6. To aid a victim of electrical shock, which of
the following should you not do?
A. Quickly grasp and drag the victim away
from the current-carrying material.
B. Shut off the power.
C. Call for help.
D. If the shutoff switch is too far away, use
a wooden stick to remove victim from
current-carrying equipment.
7. The worst reaction to an improper
installation is to
A. warn others in the area of the danger
B. notify your supervisor
C. ignore it
D S
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Q:
The volume of water in Tank \( P \) is
less than that in Tank \( R \).
The volume of water in Tank \( Q \) is
greater than that in Tank S.