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3 June, 14:35

What is the Nth term of these numbers 80, 120, 160

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  1. 3 June, 15:18
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    Step-by-step explanation:

    80,120,160 ...

    This is an arithmetic sequence

    common difference (d) = 2nd term - 1st term

    = 120 - 80 = 40

    first term (a) = 80

    nth term = a + (n-1) d

    = 80 + (n-1) * 40

    = 80 + 40n - 40

    = 40 + 40n
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