Answer:
BOX
Step-by-step explanation:
Start at negative 5 since that’s your y-intercept.
Since 3/5 is your slope and slope equals rise over run you go up 3 units and go right 5 units.
Using proportions, it is found that the speed of the runners are of 16 mph and of 20 mph.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount.
After 30 minutes, the runners are 2 miles apart, hence the second runner is 4 miles per hour faster than the second, that is:
.
The first runner's speed is 4/5 of the speed of the second runner, hence:
![v_1 = \frac{4}{5}v_2](https://tex.z-dn.net/?f=v_1%20%3D%20%5Cfrac%7B4%7D%7B5%7Dv_2)
![v_1 = \frac{4}{5}(v_1 + 4)](https://tex.z-dn.net/?f=v_1%20%3D%20%5Cfrac%7B4%7D%7B5%7D%28v_1%20%2B%204%29)
![\frac{1}{5}v_1 = \frac{16}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7Dv_1%20%3D%20%5Cfrac%7B16%7D%7B5%7D)
![v_1 = 16](https://tex.z-dn.net/?f=v_1%20%3D%2016)
![v_2 = 16 + 4 = 20](https://tex.z-dn.net/?f=v_2%20%3D%2016%20%2B%204%20%3D%2020)
Hence, the speed of the runners are of 16 mph and of 20 mph.
More can be learned about proportions at brainly.com/question/24863377
Answer:
5√3 is the simplified radical expression.
The answer is D
Hope this helps