¿Todavía tienes preguntas de matemáticas?

Pregunte a nuestros tutores expertos
Algebra
Pregunta

A chemist creates \( 170 \) milliliters of a \( 52...

A chemist creates \( 170 \) milliliters of a \( 52.5 \% \) alcohol solution by combining a \( 40 \% \) alcohol solution with a \( 65 \% \) alcohol solution. If \( x \) represents the amount of the \( 40 \% \) alcohol solution used and \( y \) represents the amount of the \( 65 \% \) alcohol solution used, which of the following could be used to model the given infromation? 

1. \(\left\{ \begin{array} { l } { x + y = 170 } \\ { 40 x + 65 y = 52.5 } \end{array} \right.\)

2. \(\left\{ \begin{array} { l l l } { x+ y } { = } { 170 } \\ { 0.04 x + 0.065 y = } { 89.25 } \end{array} \right.\)

3. \(\left\{ \begin{array} { l l l } { x + y } { = }  { 170 } \\ { 0.4 x + 0.65 y = } { 89.25 } \end{array} \right.\)

4.\(\left\{ \begin{array} { l } { x + y = 170 } \\ { 4 x + 6.5 y = 89.25 } \end{array} \right.\)

5. \(\left\{ \begin{array} { l } { x + y = 170 } \\ { 0.4 x + 0.65 y = 52.5 } \end{array} \right.\)

Answer

The third answer is true.

Solución
View full explanation on CameraMath App.