This system of equations has an infinite number of solutions. define the solutions algebraically, and allow z to represent all real numbers. 3x − 4y + 4z = 7 x − y − 2z = 2 2x − 3y + 6z = 5

Let r = 3. what is the value of r + 58?

Astudent simplified a rational expression as shown.

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