Answer: a) 0.2222, b) 0.3292, c) 0.1111
Step-by-step explanation:
Since we have given that
Let the probability of getting head be p.
Since, its head is twice as likely to occur as its tail.

a)If the coin is flipped 3 times, what is the probability of getting exactly 1 head?
So, here, n = 3


Now,

b)If the coin is flipped 5 times, what is the probability of getting exactly 2 tails?
2 tails means 3 heads.
So, it becomes,

c)If the coin is flipped 4 times, what is the probability of getting at least 3 tails?

Hence, a) 0.2222, b) 0.3292, c) 0.1111
6x = 15
I apologize if this is wrong!
Answer:
x=-b/2a
Step-by-step explanation:
Answer: 30 square inches.
Step-by-step explanation: Take the equation, V=(1/3)AH
For V=Volume, A=Area of base, and H=equals the height of the triangular pyramid.
We know the area of the base is 9, and the height is 10. So, multiply 10x9. You get 90.
Now, to get the v, you divide 90 by 3 to get 30. V=30.