What are the roots of the equation x2 + 18x + 90 = 0 in simplest a + bi form?

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

Which geometric principle is used to justify the construction below?

Is the ordered pair (-10, 7) a solution to the equation y = 17 – x? yes or no