From a point 25.4 m from the base of a clife, a land surveyor uses a theodolite to measure the angle of elevation to the top of a clife as 72.5° with respect to his line kf sight. if the surveyor is 5'11" tall, what is the height of the cliff, to the nearest tenth of a meter ! explain! asap

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