SOLUTION: please help Given that the first term of a geometric sequence is -320 and seventh term is -3645, the common ratio to the nearest tenth is?

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Question 850720: please help
Given that the first term of a geometric sequence is -320 and seventh term is -3645, the common ratio to the nearest tenth is?

Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
Tn = t1 * r^(n - 1)
-3645 = -320* r^(7- 1)
r = -3/2

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