Determine 8th term in the geometric sequence whose first term is - 10 and whose common ratio is 2

Question

Mathematics

Titus

13 June, 03:08

Determine 8th term in the geometric sequence whose first term is - 10 and whose common ratio is 2

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Answers (1)

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Iliana Harper · Answer 1

Any geometric sequence can be expressed as:

a (n) = ar^ (n-1), a=initial term, r=common ratio, n=term number

We are told that a=-10 and r=2 so:

a (8) = - 10 (2^7)

a (8) = - 1280