The first four terms of an arithmetic sequence are 28 20 12 4 which term of the sequence is - 36

Question

Emilee Moon

Mathematics

15 May, 13:29

The first four terms of an arithmetic sequence are 28 20 12 4 which term of the sequence is - 36

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Answers (1)

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Jovanny · Answer 1

The nth term=the first term + (n-1) the difference

Here the difference between neighboring terms is - 8

-36=28 + (n-1) * (-8)

-8 (n-1) = - 36-28=-64

n-1=8

n=9

the 9th term is - 36