Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 11 - Section 11.3 - Geometric Sequences and Series - Exercise Set: 11

Answer

$a_1=20 \\a_2=10 \\a_3=5 \\a_4=2.5 \\a_5=1.25$

Work Step by Step

Multiply the common ratio to get the next term to obtain: $a_1=20 \\a_2=20(\frac{1}{2}) = 10 \\a_3=10(\frac{1}{2})=5 \\a_4=5(\frac{1}{2})=2.5 \\a_5=2.5(\frac{1}{2}) = 1.25$
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