Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 2 - Section 2.5 - Compound Inequalities - Exercise Set - Page 95: 68

Answer

$\left[ -\dfrac{4}{3},2 \right)$

Work Step by Step

Using the properties of inequalities, then, \begin{array}{l} -\dfrac{1}{2}\le \dfrac{3x-1}{10}\lt\dfrac{1}{2}\\\\ -5(1)\le 1(3x-1)\lt5(1) \text{...multiply all sides by 10}\\ -5\le 3x-1\lt5\\ -5+1\le 3x-1+1\lt5+1\\ -4\le 3x\lt6\\\\ -\dfrac{4}{3}\le x\lt2 .\end{array} Using the conjunction "OR", the solution set is the combined solution of both inequalities. Hence, in interval notation form, the solution is $ \left[ -\dfrac{4}{3},2 \right) $.
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