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23 May, 18:24

Find an explicit formula for the arithmetic sequence 12, 5, - 2, - 9, ...

a (n) =

+4
Answers (1)
  1. 23 May, 21:13
    0
    a is the beggining number and n is the amount of times needed to do this. if is 17 you would need to subtract 7 from the originol number 12 (a) that many times.
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