Answer
2.25
Work Step by Step
We know that the sum of all of the individual lengths adds up to the overall length. Hence, it follows:
$$ 15 = 2(3) +4x \\ 15 = 6 + 4x \\ 9 = 4x \\ x = 2.25$$
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 1, Equations and Inequalities - 1.5 Use Problem Solving Strategies and Models - 1.5 Exercises - Skill Practice - Page 37: 18
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