Find the common ratio of the geometric sequence -1, -9, -81,...−1,−9,−81,
1 answer:
Answer:
Geometric
Common ratio = 3
Step-by-step explanation:
3,9,27,81 is geometric because there is a common ratio.
We know there is a common ratio because a term divided by it's previous term is the same each time.
That is
81/27=3
27/9=3
9/3=3.
So the common ratio is 3.
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