posted by Jon on .
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.
isnt this an arithmetic series of value r=1/5 ? Isnt there a formula for it?
I think I got it. I'll have my answer shortly
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.