Answer
$\frac{1}{2}$
Work Step by Step
$x^y$ if x=2 and y=-1.
Substitute the values:
$(2)^{-1}.$
Take the reciprocal of the base:
$\frac{1}{2^1}.$
Therefore, the answer is:
$\frac{1}{2}.$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding - Page 28: 107
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