Answer
The angles are 40 degrees and 140 degrees.
Work Step by Step
The sum of the two angles is 180 degrees.
x+(3x+20)=180
4x=160
x=40 degrees
The angles are 40 degrees and 140 degrees.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 2 - Section 2.2 - An Introduction to Problem Solving - Exercise Set - Page 66: 47
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