3 years ago

Can some one help me in less then five minutes??

Mathematics

1 answer:

8090 [49]3 years ago

6 0

Answer:

x>dy-c

Step-by-step explanation:

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Step-by-step explanation:

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Since, $\begin{bmatrix}2 & -3\\ 1 & 2\end{bmatrix}^{-1}=\frac{1}{7}\begin{bmatrix}2 & 3\\ -1 & 2\end{bmatrix}$

And $A^{-1}A=I$

$\begin{bmatrix}x\\y \end{bmatrix}=\frac{1}{7}\begin{bmatrix}2 & 3\\ -1 & 2\end{bmatrix}\times \begin{bmatrix}19\\-1 \end{bmatrix}$

$\begin{bmatrix}x\\y \end{bmatrix}=\frac{1}{7}\begin{bmatrix}35\\ -21\end{bmatrix}$

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Therefore, x = 5 and y = -3 will be the value of variables.

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