document.write( "Question 159125: Im having a brain fart. Im trying to solve 3+9+27+..., find S10
\n" ); document.write( "tn=3+(10-1)(is 3 to power of 3?) I can't remember the rule for multiplying.Please help!\r
\n" ); document.write( "\n" ); document.write( "t10=12(?)
\n" ); document.write( "t10=\r
\n" ); document.write( "\n" ); document.write( "s10= [n(t1+tn)/2]
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Algebra.Com's Answer #117330 by Alan3354(69443)\"\" \"About 
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Im having a brain fart. Im trying to solve 3+9+27+..., find S10
\n" ); document.write( "tn=3+(10-1)(is 3 to power of 3?) I can't remember the rule for multiplying.Please help!
\n" ); document.write( "t10=12(?)
\n" ); document.write( "t10=
\n" ); document.write( "s10= [n(t1+tn)/2]
\n" ); document.write( "-------------
\n" ); document.write( "What are you trying to do?
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