Which ratio is equivalent to 2:6? 08:18 8:24 10:36 O 10:42. pls i need he right nkw pl

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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?