document.write( "Question 134213This question is from textbook Elementary and intermediate Algebra
\n" ); document.write( ": 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 collision detector warns the driver that there is a train 50 meters from the car heading toward the same crossing. How far is the train from the crossing? \n" ); document.write( "

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A car is traveling on a road that is perpendicular to a railroad track. When the
\n" ); document.write( " car is 30 meters from the crossing, the cars new collision detector warns the
\n" ); document.write( " driver that there is a train 50 meters from the car heading toward the same
\n" ); document.write( " crossing. How far is the train from the crossing?
\n" ); document.write( ":
\n" ); document.write( "This situation is in the form of a right triangle where one leg is dist to the
\n" ); document.write( "crossing, given as 30 meters. The distance from the train to the car is the
\n" ); document.write( "hypotenuse, given as 50 meters. We want to find the 2nd leg of the triangle (b)
\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 meters
\n" ); document.write( ":
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