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algebra

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what is the 10th term of the sequence 81,27,9 can someone please explain the steps.
possible answers;
1/729
1/243
1/81
1/810

  • algebra - ,

    a = 81
    r = 1/3
    so,
    T10 = ar^9 = 81/3^9 = 3^4/3^9 = 1/3^5 = 1/243

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