Mathematics, 13.12.2019 03:31 Cinic21
Solve the system of equations using matrices. x+7y=02x−8y=22 question 7 (mandatory) (1 point) step 1. find the coefficient matrix. a=[blank 1blank 3blank 2blank 4]
Answers: 3
![\left[\begin{array}{ccc}1&7\\2&-8\end{array}\right]\left[\begin{array}{ccc}x\\y\end{array}\right] =\left[\begin{array}{ccc}0\\22\end{array}\right]](/tpl/images/0416/3779/b6e65.png)
![A^{-1} =\frac{-1}{22} *\left[\begin{array}{ccc}-8&-7\\-2&1\end{array}\right]](/tpl/images/0416/3779/e9d12.png)
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Solve the system of equations using matrices. x+7y=02x−8y=22 question 7 (mandatory) (1 point) step 1...
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