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Find the 81st term of the arithmetic sequence -10, -25, -40
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5 votes
Find the 81st term of the arithmetic sequence -10, -25, -40

User Josh Bruce
by
8.2k points

2 Answers

5 votes

Answer:

-1210

Explanation:

The nth term is -10-(15(n-1)) so

-10-(15(80)=

-10-1200=

-1210

User Dmahapatro
by
8.0k points
5 votes

Answer:

5 - (N x 15)

81 x 15 = 1215

5-1215=-1210

-1210 should be the 81st term

Explanation:

User Some
by
8.5k points
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