SOLUTION: What is the common ratio in the sequence 12, -18, 27, …

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Question 850176: What is the common ratio in the sequence 12, -18, 27, …
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
find the ratio of elements 1 & 2
find the ratio of elements 2 & 3
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If it's the same, you're home free.