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: 112

Answer

$\sqrt{10} \text{ units}$

Work Step by Step

Using $|a+bi|=\sqrt{a^2+b^2},$ then the given expression, $ |-3-i| ,$ is equal to \begin{array}{l}\require{cancel} \sqrt{(-3)^2+(-1)^2} \\\\= \sqrt{9+1} \\\\= \sqrt{10} \text{ units} .\end{array}
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