Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.2 Arithmetic Sequences and Series - 14.2 Exercise Set: 23

Answer

$a_{18}=178$

Work Step by Step

The n th term of an arithmetic sequence can be calculated as: $a_n=a_1+d\times(n-1)$ Here: $n=18$, $d=10$ and we have to find $a_{18}$. By substituting we get: $a_{18}=8+10\times(18-1)=178$ $a_{18}=178$
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