the length of the arc cnb is 1 by 5 of the perimeter of the circle and the length of the arc amd is 1 by 6 of the perimeter of the circle what is the measure of the central angle of the arc cnb and find the measures of angeles cdb, abd and apd

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