What is the intersection of plane stxw and plane svut

Cindy uses 1-inch cubes to find the volume of a jewelry box shaped like a rectangular prism. she uses 780 cubes to completely fill the jewelry box with no gaps or overlaps. if the jewelry box is 13 inches long and 5 inches wide, how tall is cindy’s jewelry box?

What is the solution of sqrt x+2-15=-3

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