Answer
89.95 $\leq$ x $\leq$ 90.05 cm
Work Step by Step
Ideal length is 90, length varies by 0.5 ,so add 0.5 to 90 and subtract 0.5 from 90:
90+.05=90.05
90−.05=89.95
Thus;
89.95 $\leq$ x $\leq$ 90.05 cm
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
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 - Page 211: 47
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