Which system of equations corresponds to this matrix multiplication operation? 5 2 11 7 -5 -5 3 1. -- (167 = 3 12) A. 5x + 2x + x = 16; 7y - 5y + 2y = 3; -5z + 3z + z = 12 B. 5x + 2y + z = 16; 7x - 5y + 2z = 3; -5x + 3y + z = 12 C. 5x + 7y + -5z = 16; 2x - 5y + 3z= 3; x + 2y + z = 12 D. 5x + 7y + -5z = 12; 2x - 5y + 3z= 3; x + 2y + z = 16​

If the discriminant if a quadratic equation is 4 which statement describes the roots?

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm