Atrain that is 1 mile long starts through a tunnel that is also 1mile long . the train is traveling 15 miles per hour. how long does it take for the train to get completely out of the tunnel?

2

Step-by-step explanation:

First you find the horizontal distance between the two points, so you subtract -3 - (-5) = 2. Then, you find the vertical distance between the two points, so you subtract 5 - (-5) = 10.

You can think of it like a triangle with the horizontal distance and the vertical distance as the legs of the triangle. You use the pythagorean theorem, a^2 + b^2 = c^2, substituting in a = 2 and b = 10. You get 2^2 + 10^2 = c^2, so 104 = c^2. This means that c = = 2