How many arrangements can be made out of the letters of the word 'ENGINEERING' [order is not important] + [without repetition of letters]

Using elimination, what is -4x+2y=-12 4x+8y=-24

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?

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?