Find value of x if ABCD is a parallelogram. A is 3y, B is 2y-5,C is 3x+3 and D is not given

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39