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Chapter 12: Q 36. (page 825)

In Problems 31鈥�38, find the nth term anof each geometric sequence. When given, r is the common ratio.

a2=7;r=13

Short Answer

Expert verified

Thea1term is 21 andan=21路13n-1

Step by step solution

01

Step 1. Write the given information.

Given common ratio isr=13anda2=7

02

Step 2. 

The formula for the nth term isan=a1路rn-1

a2=a1=a路132-17=a1路13a1=21

an=21路13n-1

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Most popular questions from this chapter

In Problems 51鈥�60, write out each sum.

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a1=3;an=4-an-1

In Problems 17鈥�28, write down the first five terms of each sequence.

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In Problems 29鈥�36, the given pattern continues. Write down the nth term of a sequence ansuggested by the pattern.

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鈭�(5k=120k+3)
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