Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 4 - Quadratic Functions and Equations - 4-2 Standard Form of a Quadratic Function - Practice and Problem-Solving Exercises - Page 208: 54

Answer

15 min

Work Step by Step

We can write this as a proportion: 10:60 = x:90, or $\frac{10}{60} = \frac{x}{90}$ Cross-multiply: 10*90 = 60x, x = 15
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