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24 June, 02:09

Whats the twentieth term of this arithmetic sequence: a sub 1 = 3 and d=7

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  1. 24 June, 04:32
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    Arithmetic Sequence

    The value of the 20th term of this arithmetic series is 136

    Step-by-step explanation:

    The first term of the arithmetic term is a = 3

    and the common difference is d = 7

    So the 20th term of this arithmetic progression is given by

    an = a + (n-1) * d

    where an is the nth term of the arithmetic progression

    so for nth term, the value of n = 20

    ⇒ a20 = 3 + (20-1) * 7

    ⇒ a20 = 3 + 19 * 7

    ⇒ a20 = 3 + 133

    ⇒ a20 = 136

    Hence, the value of the 20th term of this arithmetic series is 136
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