Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter R - Section R.1 - Basic Concepts - R.1 Exercises: 35

Answer

(a) A (b) A (c) B (d) B

Work Step by Step

(a) We know that two negatives cancel, so: $-(-4)=4$ This corresponds to choice A. (b) We know that an absolute value makes numbers positive, so: $|-4|=4$ This corresponds to choice A. (c) Based on the previous result, we have: $-|-4|=-(4)=-4$ This corresponds to choice B. (d) Combining previous results, we get: $-|-(-4)|=-|4|=-4$ This corresponds to choice B.
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