Answer
.75
Work Step by Step
We know that the sum of all of the individual lengths adds up to the overall length. Hence, it follows:
$$ 12 = 4x+3(3) \\ 12 = 4x + 9 \\ 3 = 4x \\ x =.75$$
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: 17
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