Answer
$d(a,b)=50$
Work Step by Step
Using algebra, we find:
$d(a,b)=|b-a|=|30-(-20)|=|30+20|=|50|=50$
Algebra and Trigonometry 10th Edition
by Larson, Ron
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
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