SOLUTION: A car is traveling on a road that is perpendicular 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

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Question 143978: A car is traveling on a road that is perpendicular 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 tain 50 meters from the car and heading toward the same crossing. How far is the tain from the crossing?
This problem is in a chapter that includes factoring equations and the Pythagorean theorem. Thanks for any help you can give me!

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
40m
c%5E2+=+a%5E2+%2B+b%5E2
50%5E2+=+30%5E2+%2B+b%5E2
1600+=+b%5E2
b=40
This is a variant of the 3-4-5 triangle. You'll see lots of those