document.write( "Question 168351: A car is traveling on a road that is perpendicular to a railroad track. When the 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 #124083 by Mathtut(3670) $\"\"$ $\"About$

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\n" ); document.write( "this is a right triangle problem so use the pathorean theorem:\r
\n" ); document.write( "\n" ); document.write( " $\"a%5E2%2Bb%5E2=c%5E2\"$ in this case a is 30 and c is 50 and b is what you are looking for\r
\n" ); document.write( "\n" ); document.write( " $\"30%5E2%2Bb%5E2=50%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"900%2Bb%5E2=2500\"$
\n" ); document.write( " $\"b%5E2=1600\"$ take sqrt of both sides
\n" ); document.write( " $\"highlight%28b=40%29\"$ which is how far the train is from the crossing \n" ); document.write( "

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