College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.8 - Solving Absolute Value Equations and Inequalities - 1.8 Exercises - Page 153: 46


Interval: $[\frac{9}{2},\ 5)\cup (5,\ \frac{11}{2}]$

Work Step by Step

$0\lt|x-5| \leq\frac{1}{2}$ $\frac{1}{2}\leq x-5\leq\frac{1}{2}$ $\frac{1}{2}+5\leq x-5+5\leq\frac{1}{2}+5$ $\frac{9}{2}\leq x\leq\frac{11}{2}$ $4.5\leq x\leq5.5$ However, we exclude $x=5$ because then we would have $0\lt0$, which is false. Interval: $[\frac{9}{2},\ 5)\cup (5,\ \frac{11}{2}]$
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