Find the sum of the first 39 terms of the following series, to the nearest integer 7,15,23,…

Question

Find the sum of the first 39 terms of the following series, to the nearest integer
7,15,23,…

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Gerda 4 years 2021-09-04T00:56:23+00:00 1 Answers 17 views 0

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  1. Adela
    0
    2021-09-04T00:57:27+00:00
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    Answer:

    6201

    Step-by-step explanation:

    formula for series in AP

    where n is the nth term and a is first term and d is difference between two terms in series sum = \frac{n}{2} (2a \: + (n - 1)d)

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )