X² y² + x² + y² + 1 = x² ( y² + 1 ) + y² + 1

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .