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13 November, 13:35

Find the 11th term of the arithmetic sequence: 9.2, 9.15, 9.1, 9.05, ...

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  1. 13 November, 13:46
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    The equation to use is

    an=a1 + d (n-1)

    a1 = the first #

    d = the common difference

    n = the # of terms

    a1 = - 3. d = 10. n=11

    So ...

    = - 3+10 (11-1)

    = - 3+10 (10)

    = - 3+100

    =97

    Therefore your answer is 97.
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