Find the cosine of angle E.
A) 39/80
B) 39/89
C) 80/39
D) 80/89

Can (3,5 and square root 34) be sides on a right triangle?

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)