Algebra 1: Common Core (15th Edition)

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

Chapter 3 - Solving Inequalities - 3-7 Absolute Value Equations and Inequalities - Practice and Problem-Solving Exercises: 69

Answer

a) Acceptable range (with wrapper): 193.74 grams to 209.26 grams b) Yes, it is possible. If 20 nickels weigh 4.9 grams, and the other 20 nickels weigh 5.1 grams, then the weight of the 40 nickels would be 200 grams. Add the 1.5 grams for the wrapper, and the weight would be 201.5 grams. (4.9 and 5.1 grams are within the acceptable variance of .194 grams)

Work Step by Step

a) 5−.194=4.806 grams 4.806∗40=192.24 grams 192.24+1.5=193.74 grams 5+.194=5.194 grams 5.194∗40=207.76 grams 207.76+1.5=209.26 grams b) 20∗4.9+20∗5.1=98+102=200
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