1) the difference of Five and a number

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 the scale factor between two circles is 2x/5y what is the ratio of their areas?

What is the reflection image of r across the y-axis? (0, 2) (3, 2) (-3, -2) (-2,0)