Mathematics, 21.01.2020 14:31 davidsteck99
Find the solution to the system of equations represented by this matrix equation using an inverse matrix.
Answers: 2
![\left[\begin{array}{c}\frac{5}{4}\\-\frac{1}{2}\end{array}\right]](/tpl/images/0464/0998/01443.png)
![\left[\begin{array}{cc}a&b\\c&d\end{array}\right]](/tpl/images/0464/0998/5e39f.png)
![\dfrac{1}{ad-bc}\left[\begin{array}{cc}d&-b\\-c&a\end{array}\right]](/tpl/images/0464/0998/3ba28.png)
![\dfrac{1}{2(-3)-(1)(2)}\left[\begin{array}{cc}-3&-1\\-2&2\end{array}\right]](/tpl/images/0464/0998/00e63.png)
![\left[\begin{array}{c}x\\y\end{array}\right]=\left[\begin{array}{cc}\frac{3}{8}&\frac{1}{8}\\\frac{1}{4}&-\frac{1}{4}\end{array}\right] \cdot\left[\begin{array}{c}2\\4\end{array}\right] =\left[\begin{array}{c}\frac{5}{4}\\-\frac{1}{2}\end{array}\right] \qquad\text{matches selection D}](/tpl/images/0464/0998/1a8a9.png)
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