Answer
$145^{\circ};35^{\circ}$
Work Step by Step
1. Supplementary angles have a sum of 180 degrees; make the equation and solve for x
(7x+19)+(2x-1)=180
9x+18=180
9x=162
x=18
2. Then plug x into angles :
7(18)+19=145
2(18)-1=35
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 1 - Test - Page 43: 2
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