document.write( "Question 1035986: Find the sum of the 1st to 50th terms where a1= 2.1 and a50= 1.2 \n" ); document.write( "
Algebra.Com's Answer #650613 by robertb(5830)\"\" \"About 
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Assuming arithmetic progression, \r
\n" ); document.write( "\n" ); document.write( "\"S%5B50%5D+=+%2850%2F2%29%28a%5B1%5D%2Ba%5B50%5D%29+=+25%2A%282.1%2B1.2%29+=+165%2F2+=+82.5\".
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