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22 August, 14:29

Find the 15th term of the arithmetic sequence.

2, 3.5, 5, 6.5, ...

+1
Answers (1)
  1. 22 August, 17:40
    0
    An=a1+d (n-1)

    a1=first term

    d=common difference

    n=which term

    adds 1.5 each time

    first term is 2

    we want to find 15h term

    a15=2+1.5 (15-1)

    a15=2+1.5 (14)

    a15=2+21

    a15=23

    the 15th term is 23
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