document.write( "Question 860643: in an arithmetic sequence, what is d if a1 is 13 and a71 is 223 \n" ); document.write( "

Algebra.Com's Answer #518573 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( " = 223
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document.write( "                  d = 210/13  \n" );
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