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27 November, 08:40

Write the first five terms of the geometric sequence a1=20 r = 3

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Answers (2)
  1. 27 November, 09:38
    0
    Step-by-step explanation:

    note:

    the nth term is : An = A1 * r^ (n-1)

    put : n = 2 you have the second term A2 = 20 * (3) ^ (2-1)

    A2 = 60

    n=3 A3 = ...

    n=4 A4 = ...

    n=5 A5 = ...
  2. 27 November, 10:05
    0
    Multiply by 3 each time

    20 60 180 540 1620
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