Answer
$x=70$
Work Step by Step
The sum of the angles of a triangle is 180 degrees. We can write an equation to match that.
$x+65+55=180$
Subtracting 110 from both sides,
$x=70$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 13, Trigonometric Ratios and Functions - Prerequisite Skills - Page 850: 10
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