If the sum of n terms of a G.P series is 225, the common ratio is 2 and the last term (nth term) is 128. ​

Question

If the sum of n terms of a G.P series is 225, the common ratio is 2 and the last term

(nth term) is 128. ​

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Sadie 1 day 2021-10-13T22:26:50+00:00 2 Answers 0

Answers ( )

    0
    2021-10-13T22:28:18+00:00

    Answer:

    Step-by-step explanation:

    what is the finance charge?

    0
    2021-10-13T22:28:37+00:00

    Answer:

    n = 8.

    Step-by-step explanation:

    I am assuming that the sum is 255.

    The last term is 128 and the common ratio is 2 so we can work backwards until we reach a sum of 255.

    Term n = 128 so the previous term must be 128/2 = 64.

    So following this pattern we have:

    128 + 64 + 32 + 16 + 8 + 4 + 2 + 1 = 255.

    So we see that n = 8.

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