Posted by **Jon** on Tuesday, March 4, 2008 at 3:47pm.

Prove that the statement: (1/5)+(1/5^2)+(1/5^3)+...+(1/5^n)=(1/4)(1-1/5^n) is true for all positive integers n. Write your proof in the space below.

- Math -
**bobpursley**, Tuesday, March 4, 2008 at 4:03pm
isnt this an arithmetic series of value r=1/5 ? Isnt there a formula for it?

- Math(im working on it) -
**Jon**, Tuesday, March 4, 2008 at 4:27pm
I think I got it. I'll have my answer shortly

- Math -
**Jon**, Tuesday, March 4, 2008 at 4:44pm
Ok I have all my work down in the space but I have a spot that says:

Answer_________ What do they want me to put in that spot. I know "the answer" duh but I have all the steps and my work above that and I don't know what the "answer" is I don't want to do ALL that work and leave the answer place blank. Please tell me that made sense.

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