Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 10 - Exponents and Radicals - 10.8 The Complex Numbers - 10.8 Exercise Set: 109

Answer

$5 \text{ units} $

Work Step by Step

Using $|a+bi|=\sqrt{a^2+b^2},$ then the given expression, $ |3+4i| ,$ is equal to \begin{array}{l}\require{cancel} \sqrt{3^2+4^2} \\\\= \sqrt{9+16} \\\\= \sqrt{25} \\\\= 5 \text{ units} .\end{array}
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