document.write( "Question 1054536: what is the formula for sequences {0.2,0.22,0.222,0.2222…}\r
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Algebra.Com's Answer #671319 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The nth term is the sum of the first n terms of a G.P. \r\n" );
document.write( "with first term a1 = 0.2 and common ratio r = 0.1:\r\n" );
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document.write( "0.2+0.02+0.002+0.0002+...+0.(n-1 zeros then a 2)\r\n" );
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document.write( "which, using the formula \"S%5Bn%5D=a%5B1%5D%281-r%5En%29%2F%281-r%29\",\r\n" );
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document.write( "gives \"0.2%281-0.1%5En%29%2F%281-0.1%29\" =\r\n" );
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document.write( "\"0.2%281-0.1%5En%29%2F0.9\" =\r\n" );
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document.write( "\"expr%280.2%2F0.9%29%281-0.1%5En%29\" =\r\n" );
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document.write( "\"expr%282%2F9%29%281-0.1%5En%29\" <--- formula for the nth term.\r\n" );
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document.write( "Edwin
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