Aregular lightbulb uses 20 watts less then twice the power of an energy-saver lightbulb. if the regular bulb uses 170 watts, how much does the energy-saver bulb use?

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3