How do you find the sum of terms in and arithmetic sequence?

Question

How do you find the sum of terms in and arithmetic sequence?

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Kylie 3 weeks 2021-11-07T05:11:18+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-11-07T05:12:42+00:00

    Answer:

    There is a formula:   a_n =  d + a_n-1

    in general  for the nth term:  a_n = (n – 1) *d +  a_1

    Step-by-step explanation:

    in general  for the nth term:  a_n = (n – 1) *d +  a_1

    where  a_1   is the first term in the sequence.

    a_n  is the nth term in the sequence

    d = common difference

    where  d = difference  a_n  –  a_n-1

    for example  in the arithmetic sequence:  1, 2, 3, 4, 5, 6, 7

    the common difference is 1

    a_1 = 1

    and a_n = n   for is an integer >= 1

    0
    2021-11-07T05:12:48+00:00

    Answer:

    The sum of an arithmetic series is found by multiplying the quantity of terms times the typical of the primary and last terms. Example: 3 + 7 + 11 + 15 + ··· + 99 has a1 = 3 and d = 4. To find n, use the specific formula for an arithmetic sequence.

    Step-by-step explanation:

    in hopes of this helping :/

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45:7+7-4:2-5:5*4+35:2 =? ( )