Question 5 (3 points) Which development in the late 1700 s helped increase American agricultural output? telegraph communications mative American enslavement that planted and harvested use of computers to analyze soil

Q4. \( \triangle P Q R \) is a right-angled triangle with \( \angle P R Q=90^{\circ}, Q R=12 \mathrm{~cm}, P Q=15 \mathrm{~cm} \) and \( R S=5 \mathrm{~cm} \). (a) Find the length of \( P S \). \( P Q^{2}=P R^{2}+Q^{2} \) (b) Calculate \( \angle P Q S \).

proporción: \( \frac{x}{48}=\frac{2}{12} \) 5. La razón entre las edades de un padre y su hija es 13 a 6 . Si el padre tiene 65 años. ¿Cuál es la edad de la hija?

For the polynomial \( P(x)=x^{3}-4 x^{2}-7 x+10 \) find: \( -P(-4) \)

Дана функция \( f(x)=\frac{4}{\sqrt{x}}-\frac{3}{x^{5}} \). Общий вид первообразных функции - это \( \square \sqrt{x} \square \) (Лиии сокращённую дробь). ответить!

\( -15 \frac{1}{2}+5 \frac{3}{4} \) \( =-\frac{31}{2}+\frac{23}{4} \) \( =-\frac{31}{2} \times \frac{23}{4} \) \( =-\frac{713}{8} \) When she checked the answer by estimating, it did not make sense. What error did Wen make? Wen incorrectly converted a mixed number to an improper fraction. Wen added the numerators and denominators instead of multiplying. Wen did not take the reciprocal of the divisor. Wen did not change the division problem to multiplication.