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20 March, 13:59

Determine if the sequence is geometric. If it is, find the term named in the problem.

25.) 4, 8, 16, 32, ...

Find a9 (9 is a lowered power to a)

+1
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  1. 20 March, 15:02
    0
    120

    Step-by-step explanation:

    Each new term is twice the previous term, so this is a geometric sequence. The applicable formula is

    a (n) = a (1) * 4 * (n - 1)

    and so a (9) = 4*4 (9 - 1) = 120
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