(1) 1 (3) 3
(2) -2 (4) 7

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.