document.write( "Question 935696: A. In a arithmetic progression, the seventh term is six times the third term and the sum of the first ten term is 165. Find the first term and the common difference. Hence, find the tenth term and sum of the first 20 terms. \n" ); document.write( "
Algebra.Com's Answer #568981 by MathTherapy(10552)\"\" \"About 
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A. In a arithmetic progression, the seventh term is six times the third term and the sum of the first ten term is 165. Find the first term and the common difference. Hence, find the tenth term and sum of the first 20 terms.
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Common difference, or \"highlight_green%28d+=+5%29\"
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document.write( "1st term, or \"highlight_green%28a%5B1%5D+=+-+6%29\"
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document.write( "10th term, or \"highlight_green%28a%5B10%5D+=+39%29\"
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document.write( "Sum of 1st 20 terms, or \"highlight_green%28S%5B20%5D+=+830%29\"
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document.write( "You can do the check!! 
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