document.write( "Question 379627: A collection of dimes is arranged in a triangular array with 18 coins in the base row, 17 in the next, 16 in the next, and so forth. Find the value of the collection. \r
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Algebra.Com's Answer #269572 by edjones(8007)\"\" \"About 
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Find the sum of the arithmetic sequence and multiply it by .10
\n" ); document.write( "S[18]=18/2(1+18)
\n" ); document.write( "=9*19
\n" ); document.write( "=171
\n" ); document.write( "=$17.10
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