Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 10 - 10.4 - The Determinant of a Square Matrix - 10.4 Exercises - Page 742: 19

Answer

-24

Work Step by Step

The determinant of a 2x2 matrix can be determined using the formula ad-bc where $\begin{bmatrix} a & b \\ c & d \end{bmatrix}$ In this matrix the determinant is: (-7)(3) - (.5)(6) = -21 - 3 = -24
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