Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 10 - Systems of Equations and Inequalities - Chapter Review - Review Exercises - Page 814: 10

Answer

inconsistent.

Work Step by Step

1. Multiply the 1st equation by 3 and add to the 2nd to get $-11y+4z=40$ 2. Multiply the 1st equation by 7 and add to the 3rd to get $-33y+12z=105$ or $-11y+4z=35$ 3. Take the difference of the above two equations to get $0=5$, thus the system is inconsistent.
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