Solve the equation by completing the square. round to the nearest hundredth if necessary. x2 – 5x = 12

A3x4x5 rectangular cuboid (e.g. a brick) is painted blue and cut into 1x1 cubes. what is the expected value for the painted sides of a randomly selected cube?

What is the value of  y  in the solution to the system of equations? x  +  y  =  12x  –  3y  =  –30a. –8b. –3c. 3d. 8

Average acceleration: i have no idea how to do this.