Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - Common Core Cumulative Standards Review - Selected Response - Page 229: 9


B. 5.9 ft/s

Work Step by Step

(Convert miles per hour to feet per second) $\frac{26 mi}{1 hr}\times\frac{1 hr}{3600 s}\times\frac{5280 ft}{1 mi}=\frac{137,280 ft}{3600 s}$ (Find common denominator for feet per second) $\frac{44ft}{1s}\times\frac{3600}{3600}=\frac{158,400}{3600}$ (Find the difference in speeds) $\frac{158,400}{3600}-\frac{137,280}{3600}=\frac{21,120}{3600}\approx5.9 ft/s$
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