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Mathematics 8 Online
OpenStudy (anonymous):

Which of the following is the formula for the geometric sequence? 1, -8, 64, -512, …

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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