Answer
$7$
Work Step by Step
Recall that $\sqrt[n]{x}=x^{\frac{1}{n}}$.
We change the exponent to a radical:
${49}^{\frac{1}{2}}=\sqrt[2]{49}$
Recall that $7^2=49$.
Thus,
$\sqrt{49}=\sqrt{7^2}=7$
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 - 6-4 Rational Exponents - Practice and Problem-Solving Exercises - Page 386: 12
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