Part b: the area of a rectangle is (81x2 − 4y2) square units. determine the dimensions of the rectangle by factoring the area expression completely. show your work.

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.

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction