E=mc2square, for m I have my math class next please help

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the value of x when x + 7 = 21?

The volume, v, of a rectangular prism is determined using the formula, where / is the length, w is the width, and his theheight of the prism. carltren solves for w and writes the equivalent equation w=using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches,and a length of 3.2 inches?