document.write( "Question 1001540: Find the common difference of the arithmetic sequence.
\n" ); document.write( "9, 13, 17, 21, . . . \n" ); document.write( "

Algebra.Com's Answer #618661 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "the common difference of the arithmetic sequence
\n" ); document.write( " $\"9\"$ , $\"13\"$ , $\"17\"$ , $\"21\"$ , is $\"d=4\"$ \r
\n" ); document.write( "\n" ); document.write( "as you can see\r
\n" ); document.write( "\n" ); document.write( "first term is $\"9\"$
\n" ); document.write( "second term is $\"13\"$ which is $\"9%2B4\"$
\n" ); document.write( "third term is $\"17\"$ which is $\"13%2B4\"$
\n" ); document.write( "fourth term is $\"21\"$ which is $\"17%2B4\"$ \n" ); document.write( "

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