A)
A polygon is a closed shape so there must be at least three sides. Therefore, the least value that n can be would be three.
b)
n value
3 0
n(n-3)/2
3(3-3)/3
3(0)/3
0/3
0
4 2
n(n-3)/2
4(4-3)/2
4(1)/2
4/2
2
5 5
n(n-3)/2
5(5-3)/2
5(2)/2
10/2
5
Answer:
0.08 minutes for a kilometer.
Step-by-step explanation:
If the track is 25 kilometers, and he runs 25 kilometers in 2 minutes, he runs a kilometer in 2÷25 minutes or 0.08 minutes which is 4.8 seconds.
I'm pretty sure the track isn't 25 kilometer or he can't run a lap in 2 minutes. But if so, the answer is 0.08 minutes.
Look at it this way 1(700)*1(20). can u do it now?