Answer:
4845 ways
Step-by-step explanation:
We need to form groups of four students among the total of 20 students, and the order of the students inside the group does not matter, so we have a combination problem.
To solve this problem, we just need to find the combination of 20 choose 4:
C(20, 4) = 20! / (16! * 4!) = 20 * 19 * 18 * 17 / (4 * 3 * 2) = 4845
There are 4845 ways of selecting this group of four patrols.
Answer:
a
Step-by-step explanation:
Answer:
D. (25π - 50) sq m
Step-by-step explanation:
Since ABCD is a square with the area of 100, we know that the dimensions are 10 by 10. With that, we can find that triangle ABC = 50 sq m because of (h*l)/2. Since A is the center of the circle that contains arc BD, we know that 10 is the radius of the quarter-circle ABC. Using (πr^2)/4 to get the area of the quarter-circle, we get that the quarter-circle ABC = 25π sq m. But the original triangle ABC in the quarter-circle is not shaded. Therefore, we subtract 50 from 25π, which leads to (25π - 50) sq m.
I hope this helped! :D
y = 2.5x is the same as y = 2.5x + 0
0 Will be your beginning point (where you start)
2.5 will be your slope
You would put a point at (0,0), or the origin
Then you would use the strategy to find out how steep the line would be. Rise = ↑, Run = →. You would rise (go up ↑) first, then you would run (go right →). The strategy is using the number next to x for rise, and you would use 1 for run.
In this case, you would rise up 2.5 ↑, and run right 1 →.
You will repeat the strategy until you see a clear line on your graph.