document.write( "Question 194250: A car is traveling on a road that is perpendicular to a railroad track when a car is 30 meters from the crossing, the cars new collison detector warns the driver that there is a train 50 meters from the car and heading toward the same crossing. how far is the train from the crossing? \n" ); document.write( "
Algebra.Com's Answer #145887 by ankor@dixie-net.com(22740)\"\" \"About 
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A car is traveling on a road that is perpendicular to a railroad track
\n" ); document.write( "when a car is 30 meters from the crossing, the cars new collison detector
\n" ); document.write( " warns the driver that there is a train 50 meters from the car and heading
\n" ); document.write( " toward the same crossing. how far is the train from the crossing?
\n" ); document.write( ":
\n" ); document.write( "The this is a pythag problem a^2 + b^2 = c^2
\n" ); document.write( "Let a = 30 (car from the crossing)
\n" ); document.write( "Let c = 50 (car to oncoming train)
\n" ); document.write( "find b (train to crossing)
\n" ); document.write( ":
\n" ); document.write( "30^2 + b^2 = 50^2
\n" ); document.write( "900 + b^2 = 2500
\n" ); document.write( "b^2 = 2500 - 900
\n" ); document.write( "b^2 = 1600
\n" ); document.write( "b = \"sqrt%281600%29\"
\n" ); document.write( "b = 40 meter, train is from the crossing \n" ); document.write( "
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