Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Test - Page 111: 16



Work Step by Step

RECALL: The absolute value of a negative number is its opposite. In symbols, when $a\lt 0$, $|a| =-a$. $-12.8$ is negative therefore its absolute value is its opposite, which is $12.8$. Thus, $|-12.8| = -(-12..8) = 12.8$.
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