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Find the common ratio of the geometric sequence 9,-18,36

Find the common ratio of the geometric sequence 9,-18,36
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4 votes
Find the common ratio of the geometric sequence 9,-18,36

User Valentine Stone
by
8.6k points

2 Answers

3 votes

Answer:

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Explanation:

User Siddharth Pal
by
8.5k points
6 votes

Answer:

r = - 2

Explanation:

The common ratio r of a geometric sequence is

r =
(a_(1) )/(a_(1) ) =
(-18)/(9) = - 2

User DACW
by
7.8k points
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