Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises - Page 640: 74

Answer

(a) $30^o$ F (b) $0^o$ F

Work Step by Step

Use the table to find the "windchill" temperature. (a) $40^o$ F is in the 2nd column while $20$ mph wind is in the 5th row of the first column. The intersection of the 5th row and the 2nd column is $30$. Thus, the "windchill" temperature is $30^o$ F. (b) $20^o$ F is in the 6th column while $35$ mph wind is in the 8th row of the first column. The intersection of the 8th row and the 6th column is $0$. Thus, the "windchill" temperature is $0^o$ F.
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