Which equation could you use to solve for x in the proportion 4/5=9/x?

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.