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18 May, 08:33

What is the eighth term in the arithmetic sequence 1,10,19,28

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  1. 18 May, 08:41
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    an = a1 + d (n-1)

    d = 10-1 9

    a8 = 1 + 9 (8-1)

    a8 = 1 + 9*7

    a8 = 64
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