Subtract 7x^2−5xy+8y^2 from −2x^2−15xy+9y^2

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2