A sector of a circle of radius 12cm has an area of 150cm square. Find the angle which its arc subtends at the nearest degree

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

Which ordered pair is a solution of the equation? 2x+3y=10