astroflight15
astroflight15 astroflight15
  • 02-08-2021
  • Mathematics
contestada

Use the matrix tool to solve the system of equations choose the correct ordered pair -5x+6y=-3 6x-6y=12

Respuesta :

caylus
caylus caylus
  • 02-08-2021

Answer:

Hello,

x=9

y=7

Step-by-step explanation:

[tex]A*U=B\\\\\begin{bmatrix}-5&6\\6&6\\\end{bmatrix}*\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}-3\\12 \end{bmatrix}\\\\\\A^{-1}=\begin{bmatrix}1&1\\1&\dfrac{5}{6}\\\end{bmatrix}\\\\\\A^{-1}*A*U=A^{-1}*B\\\\U=\begin{bmatrix}9\\7 \end{bmatrix}\\[/tex]

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