Answer: answer is A
Step-by-step explanation:
Expressed A is the base area of the pyramid and h is the height of the pyramid
I'm no expert, but considering it went down its probably a decease. (duh). I think its 77%, but I'm not very good with percentages
Answer: Mean = 4.8
Standard deviation = 1.96
Step-by-step explanation:
The mean and standard deviation of the binomial distribution is given by :-
, where n is the total number of trials , p is the the probability of success.
Given : The probability that the produced by a particular manufacturer are less than 1.680 inches in diameter = 20%=0.2
Sample size : n=24 [since 1 dozen = 12]
Now, the mean and standard deviation of the binomial distribution is given by :-

3250 / 625 = 5.2
It will take 5.2 hours for the plane to travel 3250 miles.