document.write( "Question 602266: Airplane A travels North at 12 mph and Airplane B travels West at 9 mph. How far away will the planes be from each other 20 minutes after they left the same airport? \n" ); document.write( "
Algebra.Com's Answer #380380 by ankor@dixie-net.com(22740)\"\" \"About 
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Airplane A travels North at 12 mph and Airplane B travels West at 9 mph.
\n" ); document.write( " How far away will the planes be from each other 20 minutes after they left the same airport?
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\n" ); document.write( "Find how far each will travel in 20 min which is 1/3 of an hour
\n" ); document.write( "\"1%2F3\" * 12 = 4 mi
\n" ); document.write( "\"1%2F3\" * 9 = 3 mi
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\n" ); document.write( "The distance between them will be the hypotenuse
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\n" ); document.write( "d = \"sqrt%284%5E2%2B3%5E2%29\"
\n" ); document.write( "d = \"sqrt%2816%2B9%29\"
\n" ); document.write( "d = 5 mi away from each other
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