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anonymous
 one year ago
Solve the system of equations and choose the correct answer from the list of options.
2x + y = −4
y = 3x + 2
negative 6 over five comma negative 8 over 5
negative 8 over 5 comma negative 6 over 5
negative 5 over 6 comma negative 11 over 5
negative 11 over 5 comma negative 6 over 5
anonymous
 one year ago
Solve the system of equations and choose the correct answer from the list of options. 2x + y = −4 y = 3x + 2 negative 6 over five comma negative 8 over 5 negative 8 over 5 comma negative 6 over 5 negative 5 over 6 comma negative 11 over 5 negative 11 over 5 comma negative 6 over 5

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0from the first eqaution y = 2x  4 so you have 2 expressions in x equal to y so equate these 2 and solve for x

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439053101422:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439053564241:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\left[\begin{matrix}2 & 1 \\ 3 & 1\end{matrix}\right]\left[\begin{matrix}x \\ y\end{matrix}\right]=\left[\begin{matrix}4 \\ 2\end{matrix}\right]\] \[A ^{1}\left[\begin{matrix}\frac{ 1 }{ 5 } & \frac{ 1 }{ 5 } \\ \frac{ 3 }{ 5 } & \frac{ 2 }{ 5 }\end{matrix}\right]\]\[\left[\begin{matrix}\frac{ 1 }{ 5 } & \frac{ 1 }{ 5 } \\ \frac{ 3 }{ 5 } & \frac{ 2 }{ 5 }\end{matrix}\right]\left[\begin{matrix}4 \\ 2\end{matrix}\right]=?\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what does that mean

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0umm you havent learn matrices yet?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then nvm, later you will learn the hax

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[2x+y=4\]\[y=3x+2\]you substitute the second equation of y into the first one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it becomes \[2x+(3x+2)=4\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0much easier to solve?
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