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24 June, 06:02

The explicit formula for a sequence is

an=12-5 (n-1)

What is the 30th term of the sequence?

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Answers (1)
  1. 24 June, 06:19
    0
    Step-by-step explanation:

    hello:

    the nth term of an arithmetic sequence is:

    an = a1 + (n-1) d ... a common difference is : d and the first term is a1

    in this exercice : an=12-5 (n-1) a1 = 12 and d = - 5

    a30 = 12-5 (30-1) = 12-5*29 = 12-145 = - 133
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