SOLUTION: I solved this problem but I need somebody to please confirm my answer is right. Thanks. 7 __ \ \ (-1/3)^n = - 547/2187 / /__ n=0 Sn = ( -1/3)^0 + (-1/3)^1+(-1/3)

Algebra ->  Sequences-and-series -> SOLUTION: I solved this problem but I need somebody to please confirm my answer is right. Thanks. 7 __ \ \ (-1/3)^n = - 547/2187 / /__ n=0 Sn = ( -1/3)^0 + (-1/3)^1+(-1/3)      Log On


   



Question 47852: I solved this problem but I need somebody to please confirm my answer is right. Thanks.
7
__
\
\ (-1/3)^n = - 547/2187
/
/__
n=0
Sn = ( -1/3)^0 + (-1/3)^1+(-1/3)^2+ (-1/3)^3 +(-1/3)^4+ (-1/3)^5 + (-1/3)^6 +
(-1/3)^7
= 0 + (-1/3) + 1/9 + (-1/27) + 1/81 + (-1/243) + 1/729 + (-1/2187)
= -547/2187

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Well, your work was very good up to the final step!
Remember that x%5E0+=+1, therefore:
%28-1%2F3%29%5E0+=+1 not 0
So the answer would then be:
2187%2F2187+-+547%2F2187+=+1640%2F2187