Use trigonometric identities to solve each equation within the given domain. 4cos4(x) – 5cos2(x) + 1 = 0 from [0, 2π). PLEASE SHOW WORK!!!

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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?