Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 7 - Measurement - 7.1 Problem Solving with U.S. Measurement Units - 7.1 Exercises: 32

Answer

1.25 feet

Work Step by Step

To find how many feet of ice are needed to safely drive a pickup truck on a lake, we need to see the bar graph. According to bar graph, 15 in. of thickness is required to drive safely. Now to calculate the thickness in feet, we need to divide since we are converting from a smaller unit to larger unit. Because 1 ft. = 12 in., divide by 12. 15 inches = 15 * 1/12 = 15/12= 5/4= 1.25 feet
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