Consider the system of linear equations.
7x+10y = -2
9x - 4y - 22
To use the linear combination method and addition to eliminate the y-terms, by which number should the second equation be
multiplied?

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