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2 October, 16:25

Find the 7th term of this geometric sequence 0.2, 0.6, 1.8,

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Answers (2)
  1. 2 October, 16:35
    0
    The pattern is multiplying by 3.

    The formula will be: 0.2 (3) ^n-1

    So, 0.2 (3) ^6=145.8
  2. 2 October, 16:46
    0
    145.8

    Step-by-step explanation:

    The geometric ratio is

    .6/.2 = 3

    The formula is given by

    an = a1 r^ (n-1)

    The first term is. 2

    an =.2 (3) ^ (n-1)

    We want the 7th term

    a7 =.2 * (3) ^ (7-1)

    =.2 (3) ^6

    =.2*729

    =145.8
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