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21 September, 00:48

Find the common difference (d), then find the indicated term of the sequence.

-2, - 9,-16, - 23, ... find the 19th term

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  1. 21 September, 01:26
    0
    -128

    Step-by-step explanation:

    d = 2 term - first term = - 9 - (-2) = - 9 + 2 = - 7

    a = - 2

    nth term = a + (n-1) * d

    19th term = - 2 + (19-1) * (-7)

    = - 2 + 18 * (-7)

    = - 2 - 126

    = - 128
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