Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 7 - Section 7.1 - Radical Expressions and Graphs - 7.1 Exercises: 78

Answer

-9.539

Work Step by Step

We can find a decimal approximation for the given radical by plugging the given radical into a calculator. $\sqrt 91\approx9.539$ This result makes since, given that $10^{2}=100$. Therefore, $-\sqrt 91\approx-(9.539)\approx-9.539$.
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