Answer:
1. (19x - 49)+(5x + 37) = 180
2. 77°
Step-by-step explanation:
1. Since the two arc measures will equal 180°, you can write the equation (19x - 49)+(5x + 37) = 180
2. By solving the equation, we can find that x=8. Plugging in the value for arc CD's equation, you will find that it is equal to 77°.
Below is an attachment containing the solution.
4072.53
explanation:
5,000 x 0.95= 4750
4750 x 0.95
x ≈ 33.1°
Using the tangent ratio in the right triangle
tan x = = , then
x = ( ) ≈ 33.1° ( to the nearest tenth )