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25 February, 16:02

Find the indicated term of the arithmetic sequence with the first term a1 and the common difference

d.

a. find a7 when a1 = - 8 and d = 4.

b. find a16 when a1 = 10 and d = 7.

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Answers (1)
  1. 25 February, 16:52
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    a. a7 = a1 + (7 - 1) d

    = - 8 + 6*4

    = 16 answer

    b a16 = 10 + 15*7

    = 115 answer
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