document.write( "Question 1029200: the first three terms of a geometric progression are 100,90 and 81 , the common ratio is 0.9 \r
\n" ); document.write( "\n" ); document.write( "Find the sum to infinity of its terms ? \r
\n" ); document.write( "\n" ); document.write( "Can someone explain this step by step please
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Algebra.Com's Answer #644268 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"A%5Bn%5D=100%280.9%29%5E%28n%29\"
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\n" ); document.write( "The sum of the geometric series,
\n" ); document.write( "\"sum%28r%5Ek%2Ck=0%2Cinfinity%29=1%2F%281-r%29\"
\n" ); document.write( "So then,
\n" ); document.write( "\"S=100%2A%281%2F%281-0.9%29%29\"
\n" ); document.write( "\"S=100%2A%281%2F0.1%29\"
\n" ); document.write( "\"S=100%2A%2810%29\"
\n" ); document.write( "\"S=1000\"\r
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