X = 7 and y = 6 because DH is equal to HF so you set x+5 = 2y and then GH and HE are equal to you set 4x-3 = 4y =1 then use the elimination principle setting 1) x - 2y = -5 and 2) 4x - 4y = 4 multiple the first equation by -2 then you can eliminate y and solve for x which is 7 then input 7 back in to one of the original equations (7) + 5 = 2y
I need you to post a diagram. However, you are describing a 30 60 90 triangle and here is a good page to learn about those: http://www.1728.org/trig2.htm
93.75 because 5.75x7.50=43.125 and 6.75x7.50=50.625 and 50.625+43.125=93.748 and round it to the near test hundredth because it’s money and that’s 93.75
