The first term of a geometric sequence is 15 and the common ratio is 2/3. What is the 9th term of the sequence? Write your answer as a fraction.

asked Aug 24, 2021 143k views

3 votes

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3 votes

Answer:

Explanation:

a= 15

r = 2/3

$a_(n)=ar^(n-1)\\\\a_(9)=15*((2)/(3))^8\\\\=15*(256)/(6561)\\\\=5*(256)/(2187)\\\\=(1280)/(2187)$

Anuj Bansal answered Aug 31, 2021

4.8k points

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