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What is the common ratio of the geometric sequence -2, 8, -32, 128

What is the common ratio of the geometric sequence -2, 8, -32, 128
asked 3.9k views
14 votes
What is the common ratio of the geometric sequence -2, 8, -32, 128

asked
User Dennis Williamson
by
7.9k points

1 Answer

5 votes

Answer:

r = - 4

Explanation:

The common ratio r of the geometric sequence is

r =
(a_(2) )/(a_(1) ) =
(8)/(-2) = - 4

answered
User Mrsargent
by
7.5k points
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