Algebra and Trigonometry 10th Edition

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

Chapter 8 - 8.5 - The Complex Plane - 8.5 Exercises - Page 603: 16



Work Step by Step

$z=-7$ $|a+bi|=\sqrt {a^2+b^2}$ $|-7|=|-7+0i|=\sqrt {(-7)^2+0^2}=\sqrt {49}=7$
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