Answer
-7
Work Step by Step
Using Cramer's rule, we find:
$$\det \begin{pmatrix}5&4\\ -2&-3\end{pmatrix} \\ 5\left(-3\right)-4\left(-2\right) \\ -7$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - 3.8 Use Inverse Matrices to Solve Linear Systems - 3.8 Exercises - Quiz for Lessons 3.6-3.8 - Page 217: 5
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