document.write( "Question 328233: A car is traveling on a road that is perpindicular to a railroad track. When the car is 30 meters from the crossing, the car's new collision detector warns the driver that there is a train 50 meters from the car and heading towards the same crossing. How far is the train from the crossing? \n" ); document.write( "

Algebra.Com's Answer #235204 by Fombitz(32388) $\"\"$ $\"About$

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Set up a right triangle and use the Pythagorean theorem $\"A%5E2%2BB%5E2=C%5E2\"$ .
\n" ); document.write( "One leg is from the car to the crossing.
\n" ); document.write( "One leg is from the train to the crossing.
\n" ); document.write( "The hypotenuse is from the car to the train.
\n" ); document.write( " $\"30%5E2%2BB%5E2=50%5E2\"$
\n" ); document.write( " $\"900%2BB%5E2=2500\"$
\n" ); document.write( " $\"B%5E2=1600\"$
\n" ); document.write( " $\"B=40\"$
\n" ); document.write( "The train is 40m from the crossing.
\n" ); document.write( " \n" ); document.write( "

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