Answer:
0.8213
Step-by-step explanation:
-This is a binomial probability problem given by the function:

Given that n=21 and p=0.2, the probability that she experience a delay on at least 3 days is calculated as:

Hence, the probability that she experience delay on at least 3 days is 0.8213
Okay! In order to find 8 groups of .32 you'd simply divide them. So:
[.32 ÷ 8] = .04
To check you multiply:
[8 x .04] = .32.
The answer is .04
Answer:
A
Step-by-step explanation:
sum means addition
the problem says sum of -4x and 2 meaning -4x + 2
the word "is" right before 9 means equals 9
I guess it s 30 irdk
hope tis helps :D