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1 vote
Determine if the sequence is arithmetic. If it is, find the term named in the problem.

-25, -17,-9,-1, ...
Find a39
Your answer:
O a39 = - 293
O a39 = - 291
O a39 = 241
a39 = 279

How do you solve this problem

User Prabhjot
by
8.1k points

1 Answer

5 votes

Answer:


a_(39) = 279

Explanation:


a_(n) =
a_(1) + (n - 1)d

d =
a_(2) -
a_(1)

~~~~~~~~~

d = - 17 + 25 = - 9 + 17 = - 1 + 9 = 8


a_(39) = - 25 + 8(39 - 1) = 279


a_(39) = 279

User Shiri
by
8.7k points

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