29-03-2017
Mathematics

contestada

Find the sum of the first 8 terms in the sequence?

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charltonwhitney charltonwhitney

29-03-2017

We need to find the 8 th term nth term is given as an=a1+(n−1)d n=8, d =-4 (common difference) a8=a1+(8−1)×d a8=1+7×(−4)

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