Answer
$$0.7$$
Work Step by Step
RECALL:
For $a\ge0$, $\sqrt{a^2} = a$.
Using the rule above gives:
\begin{align*}
\sqrt{0.49}&=\sqrt{0.7(0.7)}\\
&=\sqrt{0.7^2}\\
&=0.7
\end{align*}
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 6 - Radical Functions and Rational Exponents - Chapter Review - Page 423: 6
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