Question

what is the 25th term of the arithmetic sequence 2,1 3/5, 1 1/5??

Answer 1

If you consider the 2 to be the first term, then it is -38/5.

Answer 2

If you consider 2 to be the zeroth term, then it is -8.

Answer 3

I think it is the first term

Answer 4

if we subtract 2 from all terms we get it into a set up that we can see how much is add to each term

Answer 5

2 ,1 3/5, 1 1/5
-2 -2 -2
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0, -2/5 , .....

Answer 6

amistre, How come you haven't given me any of your medals yet?

Answer 7

oh but i have :)

Answer 8

an = 2 -2/5(n-1) is the set up for the formula then

a25 = 2 -2/5 (24)

a25 = 2 -48/5

a25 = 10/5 -48/5 = -38/5