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14 August, 21:17

Find the 8th term of the arithmetic sequence:

10, 9 3/4,9 1/2,9 1/4

8 1/4

8 1/2

7 1/2

7 3/4

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Answers (1)
  1. 15 August, 00:29
    0
    An = a1 + (n-1) d

    a8 = 10 + (8-1) (-1/4)

    a8 = 10 + 7 (-1/4)

    a8 = 10 + (-1.75)

    a8 = 8.25 or 8 1/4
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