document.write( "Question 380439: I hope someone can help me. I do not understand word problems and I need it worked out. Please help me.\r
\n" ); document.write( "\n" ); document.write( "Avoiding a collision. A car is traveling on a road that
\n" ); document.write( "is perpendicular to a railroad track. When the car is
\n" ); document.write( "30 meters from the crossing, the car’s new collision
\n" ); document.write( "detector warns the driver that there is a train 50 meters
\n" ); document.write( "from the car and heading toward the same crossing. How
\n" ); document.write( "far is the train from the crossing?\r
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\n" ); document.write( "\n" ); document.write( "Thank you!
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Algebra.Com's Answer #270002 by rfer(16322)\"\" \"About 
You can put this solution on YOUR website!
Here is something to just put in your memory for ever.
\n" ); document.write( "This is a clasic 3, 4, 5 triangle.
\n" ); document.write( "The train is 40 meters away from the intersection.
\n" ); document.write( "Use c^2=a^2+b^2 to calculate.
\n" ); document.write( "50^2=30^2+b^2
\n" ); document.write( "2500=900+b^2
\n" ); document.write( "1600=b^2
\n" ); document.write( "sqrt 1600=40 meters
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