B is the midpoint of segment AD. C is the midpoint of segment BD. located at \( (-1,-6) \) and \( D \) is located at \( (3,0) \). What are the coordinate: Draw and label a picture to help. ( \( -1,3) \) \( O(2,-1.5) \) \( O(-3,1) \) \( O(-4,3) \)

32 What is the simplest form of \( \frac{2 a-(a+b)}{a^{2}-b^{2}} \) ? \( \begin{array}{ll}\text { A } a+b & \text { B } a-b \\ \text { C } \frac{1}{a+b} & \text { D } \frac{1}{a-b}\end{array} \)

\( e ^ { \frac { 1 } { 2 } \ln 2 + i \frac { \pi } { 4 } } \)

\( \left. \begin{array} { c } { 787.827 .179 } \\ { \square } \\ { \square } \end{array} \right. \)

\( e ^ { 3 - i } \)

PROBLENA 1 CALCULA EL \% VIV DE WNA SOLUCIOÓN CUYO SOLUTO ES 1,25 ML, SI EL VOLUMEN TOTAL ES 3ML L CUANTOS ML TIENE EL SOLVENTE? CALCULA EL PORCENTADE OEL SOLUTO