document.write( "Question 171175: Can someone please show me how to do this problem
\n" ); document.write( "Prove that the statement: 1/5+1/5^2+1/5^3+...+1/5^n=1/491-1/5^n) is true for all positive integers n. Show all your work
\n" ); document.write( "PLEASE HELP!!!!!
\n" ); document.write( "Thanks
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Algebra.Com's Answer #126380 by oscargut(2103)\"\" \"About 
You can put this solution on YOUR website!
S=1/5+1/5^2+1/5^3+...+1/5^n
\n" ); document.write( "(1/5)S=1/5^2+1/5^3+...+1/5^n+1/5^(n+1)\r
\n" ); document.write( "\n" ); document.write( "S-(1/5)S = (4/5)S = 1/5 - (1/5)^(n+1)\r
\n" ); document.write( "\n" ); document.write( "S=1/4 - (5/4)(1/5)^(n+1)= 1/4(1-(1/5)^n)\r
\n" ); document.write( "\n" ); document.write( "i think you typed a 9 instead of a (
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