8x-y=2 ---> y=8x-2
5x-4y=3
5x-4(8x-2)=3
5x-32x+8=3
-27x+8=3
-27x=-5
x= 5/27
8(5/27)-y=2
40/27-y=2
y=-14/27
Answer:
1.68 ft
Step-by-step explanation:
Let x be the radius
Arc length = 3.14x
Width = 2x
Height = [12 - (2x) - 3.14x]/2
= 6 - 2.57x
Area = 3.14x²/2 + 2x(6 - 2.57x)
Area = 12x - 3.57x²
dA/dx = 12 - 7.14x = 0
x = 1.6806722689
Height = 6 - 2.57x
= 1.6806722689
40 degrees is your answer. Just click your pic and use a protracter and get 40. I hope I helped!
