Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 7 - Similarity - 7-1 Ratios and Proportions - Lesson Check: 3

Answer

12

Work Step by Step

Cross multiply. $\frac{20}{z}$ = $\frac{5}{3}$ 20 x 3 = 5 x z 60=5z Divide both sides by 5. 12 = z
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