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

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asked Nov 2, 2018 108k views

1 Answer

Niasia · Answer 1 · 2018-11-06T16:26:08+0000

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

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

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