Identify the sentence problem (RO, CS, SF) and choose the best option for correcting; or choose C for correct. The man with the yellow hat was always trying to keep Curious George out of trouble, George, however, did not seem to be aware of any trouble. Select one: A. CS-Add a semi colon after "trouble" C=correct D. RO-Add "but" after comma

A sample of vegetable oil with density \( 921 \mathrm{~kg} / \mathrm{m}^{3} \) is found to have a mass of 50.7 g . Determine the volume \( V \) of this sample.

Express the number in scientific notation. 0.00000028904 \( 2.8904 \times 10^{6} \) \( 2.8904 \times 10^{-7} \) \( 2.8904 \times 10^{7} \) \( 2.8904 \times 10^{-6} \)

B. Encuentra los primeros cuatro términos y el décimo têrmino de cada sucesión. \( \begin{array}{ll}\text { a. } a_{n}=\frac{7-4 n^{2}}{3+2 n^{2}} & \text { b. } a_{n}=\frac{(2 n-1)(3 n+1)}{n^{3}+1} \\ \text { c. } a_{n}=1-\frac{2}{n} & \text { d. } a_{n}=(-1)^{n+1} \frac{1}{3 n-1} \\ \text { e. } a_{n}=\frac{n}{\sqrt{1+n^{2}}} & \text { f. } a_{n}=\frac{\sqrt{n+1}}{n^{2}} \\ \text { g. } a_{n}=\frac{1}{n(n+1)} & \text { h. } a_{n}=(-1)^{n} \frac{n}{(n+1)(n+2)}\end{array} \)

\( \left. \begin{array} { l } { 2,576 } \\ { 5,8 } \\ \hline 15688 \\ { 12853 } \\ { 1,3721 } \end{array} \right. \)

Verifica si es posible construir los triángulos con las características dadas en cada caso. Justifica tu respuesta. 42. \( \mathrm{m} \Varangle A=46^{\circ}, \mathrm{m} \Varangle B=83^{\circ} \) y \( \mathrm{m} \Varangle C=61^{\circ} \). 43. \( a=5 \mathrm{~cm}, b=4 \mathrm{~cm} \) y \( c=8 \mathrm{~cm} \). 44. \( a=6 \mathrm{~cm}, b=9 \mathrm{~cm} \mathrm{y} c=2 \mathrm{~cm} \).