Algebra and Trigonometry 10th Edition

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

Prerequisites - P.1 - Review of Real Numbers and Their Properties - Exercises - Page 12: 44

Answer

$d(a,b)=50$

Work Step by Step

Using algebra, we find: $d(a,b)=|b-a|=|30-(-20)|=|30+20|=|50|=50$
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