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31 August, 00:26

What is the formula for the following arithmetic sequence? - 9,-2,5,12

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  1. 31 August, 02:03
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    -9 + (n-1) - 7

    Step-by-step explanation:

    formular for AP is

    a + (n-1) d

    where A is - 9

    d is 5--2=7

    or - 2--9=7
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