2 largest number is 1/3 and 4/13
1/3 + 4/13 = 25/39
or 
The hypotenuse is the longest side of the triangle. The opposite is the side that is across from a point/angle. The adjacent is the side next to a point/angle.
At ∅ (pretend that's theta LOL), 17 is the hypotenuse, 8 is the opposite side, and 15 is the adjacent side.
So:
sin ∅ = Opposite/Hypotenuse
sin ∅ = 
cos ∅ = Adjacent/Hypotenuse
cos ∅ = 
tan ∅ = Opposite/Adjacent
tan ∅ = 
I can do 9 and 10. But I can't see number 8
Since there are 60 seconds in one minute, we can form the equation:

From here, we can cross multiply.


The train would travel 10,800 feet in one minute.