Use an inverse matrix to solve the system of equations, if possible. 2x + 3y = 2
x – 4y = -21

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?

Factor the monomial completely 42a3b3

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u