Answer
$-58$
Work Step by Step
Use the determinant formula, we have $\begin{vmatrix} 6 & 8 \\ 2 & -7 \end{vmatrix}=(6)(-7)-(2)(8)=-58$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 9 - Systems and Matrices - Test - Page 957: 10
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
