a field is surrounded by a race track. It is getting added with new grass. the racetrack has a rectangular center and a semicircle on each end. The length of the rectangle measures 100 feet and the with measures 40 feet. How much grass is needed to cover the inside of the racetrack?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14