Acylindrical container of three rubber balls has a height of 18 centimeters and a diameter of 6 centimeters. each ball in the container has a radius of 3 centimeters. find the amount of space in the container that is not occupied by rubber balls. round your answer to the nearest whole number

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer