Mathematics, 27.11.2019 06:31 shelbycg02
Using cramer's rule, what is the value of x in the solution to the system of linear equations below?
5x-4 = 3y
2x+32 = 4y
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Answers: 2
![\left[\begin{array}{cc}5&-3\\2&-4\end{array}{}\right] \left[\begin{array}{c}x\\y\end{array}{}\right]= \left[\begin{array}{c}4\\-32\end{array}{}\right]](/tpl/images/0392/9124/c0720.png)
![Det\left[\begin{array}{cc}5&-3\\2&-4\end{array}{}\right]= 5\times-4-(-3\times2)\\\\=-20+6\\\therefore D= -14\\](/tpl/images/0392/9124/1347f.png)
![Dx= \left[\begin{array}{cc}4&-3\\-32&-4\end{array}{}\right]= 4\times-4-(-3\times -32)\\\\=-16-96\\= -112\\\therefore Dx = -112](/tpl/images/0392/9124/6355b.png)
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Using cramer's rule, what is the value of x in the solution to the system of linear equations below?...
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