Answer
100
Work Step by Step
Using the formula for the sum, we find:
$$\sum _{k=1}^nk^3=\frac{1}{4}n^2\left(n+1\right)^2\\ \frac{1}{4}\cdot \:4^2\left(4+1\right)^2 \\100$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 12 Sequences and Series - 12.1 Define and Use Sequences and Series - 12.1 Exercises - Skill Practice - Page 799: 47
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