Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.7 - Linear Inequalities in One Variable - 1.7 Exercises - Page 138: 81



Work Step by Step

$|u|\lt a~↔~-a\lt u\lt a$ $|u|\leq a~↔~-a\leq u\leq a$ $|u|\gt a~↔~u\lt-a~or~u\gt a$ $|u|\geq a~↔~u\leq-a~or~u\geq a$ The numbers must be greater or equal to 10 or less than or equal to 4: $x\leq4$ or $x\geq10$ $x-7\leq4-7$ or $x-7\geq10-7$ $x-7\leq-3$ or $x-7\geq3$ $|x-7|\geq3$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.