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3 July, 12:38

Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A (n) = 1 + (n - 1) (-5.7) A) 1, - 16.1, - 50.3 B) - 5.7, - 21.8, - 51.3 C) 1, - 21.8, - 56 D) 0, - 17.1, - 51.3

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  1. 3 July, 12:42
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    N = the term u r looking for

    1st term ... n = 1

    A (1) = (1 - 1) (-5.7)

    A (1) = 0

    4th term ... n = 4

    A (4) = (4 - 1) (-5.7)

    A (4) = - 17.1

    10th term ... n = 10

    A (10) = (10 - 1) (-5.7)

    A (10) = - 51.3

    answer is D
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