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OpenStudy (anonymous):
Which of the following is the formula for the geometric sequence? 1, -8, 64, -512, …
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OpenStudy (blurbendy):
the closed form for this is: a(n) = -(-1)^n*8^(n-1)
OpenStudy (anonymous):
Which of the following is the formula for this geometric sequence? 1, -3, 9, -27, ...
OpenStudy (blurbendy):
same thing, except replace 8 with 3
OpenStudy (anonymous):
The formula for a geometric sequence is an = 1000(0.5) n − 1. What is the 3rd term of the sequence?
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