document.write( "Question 199719: what is the answer of 2+4+6....+56+58+60 \n" ); document.write( "
Algebra.Com's Answer #150091 by stanbon(75887)\"\" \"About 
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what is the answer of 2+4+6....+56+58+60
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\n" ); document.write( "Find the number of terms using a(n) = a(1) + (n-1)d:
\n" ); document.write( "60 = 2 + (n-1)2
\n" ); document.write( "58 = (n-1)2
\n" ); document.write( "n-1 = 29
\n" ); document.write( "n = 30
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\n" ); document.write( "Find the sum of the 30 terms using S(n) = (n/2)(1st + last)
\n" ); document.write( "S(30) = (30/2)(2+60)
\n" ); document.write( "S(30) = 15*62
\n" ); document.write( "S(30) = 930
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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