03-10-2018
Mathematics

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here are the first four terms of an arithmetic sequence: 6,13,20,27 write down, in terms of n, an expression for the nth term of this sequence

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choixongdong choixongdong

03-10-2018

common differences d = 7

A1 = 6

arithmetic sequence:

A(n) = A1 + d(n - 1)

A(n) = 6 + d(n - 1)

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