Answer:
Point A
Step-by-step explanation:
Using proportions, it is found that the central angle of the walking sector is of 36º.
- This question can be solved by <em>proportions</em>, using a rule of three.
- The angle corresponding to 100% = 1 is of 360º, while we want to find the angle corresponding to the walking sector, which is of 10% of the circle.
Hence, the <em>rule of three</em> is:
1 - 360º
0.1 - x
Applying cross multiplication:

The central angle of the walking sector is of 36º.
A similar problem is given at brainly.com/question/24372153
The total length of Jiamin's trip was
distance = speed × time
distance = (52 mi/h) × (5 h) = 260 mi
The distance Jiamin traveled in her first 2 hours was
distance = (50 mi/h) × (2 h) = 100 mi
That means she traveled the last (260 -100) mi = 160 mi in the remaining 3 hours. Her average speed for that portion of the trip was
speed = distance / time
speed = (160 mi) / (3 h) = (160/3) mi/h ≈ 53 1/3 mi/h
Jiamin's average speed for the last 3 hours of her trip was 53 1/3 mi/h.
You are supposed to use the third option: 3n2 + 6n + 5 = 116.
Take a look at the attachment to see how I got that solution.
Hope it helps! :)