If using the method of completing the square to solve the quadratic equation x2 19x - 3= 0, which number would have to be added to "complete the
square"?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Jubal wrote the four equations below. he examined them, without solving them, to determine which equation has no solution. which of jubal’s equations has no solution hurry