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30 August, 19:12

170,85,0,-85 find explicit formula for the arithmetic sequence

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  1. 30 August, 19:17
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    An = A1 + d (n-1)

    An = 170 + (-85) (n-1)

    An=170-85 (n-1)

    An = 170-85n+85

    Answer: An=255-85n
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