document.write( "Question 760345: two cars started from the same point. one travels north at 55 mi/h and the other traveled west at 65 mi/h. how far apart were the cars after 3 hours? round to the nearest tenth of a mile \n" ); document.write( "
Algebra.Com's Answer #462628 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
The instantaneous destination points and the origination point form a right triangle... rate*time is the distance from the origination point.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%2855%2At%29%5E2%2B%2865%2At%29%5E2=%28rt%29%5E2\" where r is the rate at which the cars are separating moving away from each other. \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%2855%2At%29%5E2%2B%2865%2At%29%5E2=%28rt%29%5E2\"
\n" ); document.write( "\"r%5E2%2At%5E2=t%5E2%2855%5E2%2B65%5E2%29\"
\n" ); document.write( "\"r%5E2=55%5E2%2B65%5E2\"
\n" ); document.write( "\"r=sqrt%2855%5E2%2B65%5E2%29\" miles per hour\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "That is r=85 miles per hour.
\n" ); document.write( "\"85%2A3=highlight%28255%29\" miles
\n" ); document.write( "
\n" );