SOLUTION: 90. Avoiding a collision. 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 warn

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: 90. Avoiding a collision. 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 warn      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 133545This question is from textbook Elementary and Intermediate Algebra
: 90. Avoiding a collision. 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 train 50 meters from the car and heading toward the same crossing. How far is the train from the crossing.
FYI This questions is in a section titled: Solving Quadratic Equations by factoring
Thanks This question is from textbook Elementary and Intermediate Algebra

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
We have a right triangle.
a=30 c=50
a^2+b^2=c^2
30^2+b^2=50^2
900+b^2=2500
b^2=1600
b=40 m from the crossing.
.
Ed