SOLUTION: In the arithmetic sequence: a(sub 5) =0, and a(sub 25) =8. What is a(sub 2)? Thank you very much for helping me out! For you time and everything! Thank you very much!

Algebra ->  Sequences-and-series -> SOLUTION: In the arithmetic sequence: a(sub 5) =0, and a(sub 25) =8. What is a(sub 2)? Thank you very much for helping me out! For you time and everything! Thank you very much!      Log On


   



Question 634654: In the arithmetic sequence: a(sub 5) =0, and a(sub 25) =8. What is a(sub 2)?
Thank you very much for helping me out! For you time and everything! Thank you very much!

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
a%5B5%5D+=+a%5B1%5D+%2B+4d+=+0a%5B1%5D+=+-4d
a%5B25%5D+=+-4d+%2B+24d+=+20d+=+8 ⇒ d = 8/20 = 2/5
a%5B2%5D+=+-8%2F5+%2B+1%2A%282%2F5%29+=+-6%2F5
{ -8/5, -6/5, -4/5, -2/5, 0, ... }