Answer:
80
Step-by-step explanation:
8(3+7)=80
Answer:
1320 ways
Step-by-step explanation:
To solve we need to use permutations and factorials. If we wanted to find where they would all place 1-12, we would do 12!
12! is the same as 12x11x10x9x8... etc
But in this problem, we are only looking for the top 3.
We can set up a formula
N is the number of options that are available and r represents the amount we are choosing
In this case, we have 12 teams so n=12
We are looking for the top 3 so r=3
We expand the equation and cancel out
Notice how both sides can cancel out every number 9 and below
That leaves us with 12x11x10
1320 ways
Answer:
49π
Step-by-step explanation:
Circle area: πr^2
Since A to C is 14, and they're both in the center, A to B and B to C will both be 7 as a radius.
Since we know the radius, we can put it in the formula, πr^2.
We only need to solve for one circle, since both circles are the same. By solving the circle, we will put in 7 for the radius, giving us π7^2, which is 49π.
Answer:
22
Step-by-step explanation:
ez
Answer:
Step-by-step explanation:
total number of students=21
students play neither sport=6
students who play at least one sport=21-6=15
Let play basketball=X
and play baseball=Y
n(XUY)=n(X)+n(Y)-n(X∩Y)
15=11+6-n(X∩Y)
n(X∩Y)=17-15=2
reqd. probability=2/21