Ok is 3 plus 3 is 6 doesnt that mean 6 plus 6 is 12 ?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π