Basic College Mathematics (9th Edition)

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

Chapter 1 - Whole Numbers - 1.9 Reading Pictographs, Bar Graphs and Line Graphs - 1.9 Exercises: 27

Answer

(a) 7920 + 5280 + 7920 + 1320 + 2640 + 1320 + 2640 + (5280 - 1320*2) = 31680 (b) 95,040 feet (c) 18 miles

Work Step by Step

(a) The distance around the combined parcels is found by adding up every side. The side missing the number can be found by subtracting 5280 - 320 - 320. (b) The distance in feet around the parcels is 7920 + 5280 + 7920 + 1320 + 2640 + 1320 + 2640 + (5280 - 1320*2) = 7920 + 5280 + 7920 + 1320 + 2640 + 1320 + 2640 +(5280 - 2640) = 7920 + 5280 + 7920 + 1320 + 2640 + 1320 + 2640 + 2640 = 31,680 feet. For a three-strand barbed wire, we multiply 31,680 * 3 = 95,040 feet. (c) Since there are 5280 feet in one mile, we convert 95,040 feet by dividing by 95,040 / 5,280 = 18.
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