Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-8 Proportions and Similar Figures - Practice and Problem-Solving Exercises: 10

Answer

52.5

Work Step by Step

Because the figures are similar, we can create the following proportion: $\frac{28}{42}=\frac{35}{z}$ cross multiply $28z=35\times42$ multiply $28z=1470$ divide both sides by 28 $28z\div28=1470\div28$ $z=52.5$
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