So my brother is seriously struggling with these every day and he is really sad right now it would mean a lot to me if you'd answer these 2 questions :) 1. csc2(x) - 2csc(x)cot(x) + cot2(x) = tan2 (x/2)

2. [cos cos (x) cos(y)] [tan tan (x) + tan tan(y)] = sin(x + y)

Given f(x) = 10x + 4 and g(x) = 3x - 8, what is f(x) + g(x) ? - 7x - 4 - 13x + 4 - 7x + 4 - 13x - 4

What could explain what happened when the time was equal to 120 minutes

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.