Answer my math question I asked so many times I lost most of points
2 answers:
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Answer: Mean = 760
Standard deviation = 6.16
Step-by-step explanation:
Given : The number of trials:
The probability that a certain protection system will be recovered :
We know that the mean and standard deviation of binomial distribution is given by :_
, where n is the number of trials and p is the probability of success.
Now, the mean and standard deviation of the number of cars recovered after being stolen is given by :-
Hence, the mean is 760 and standard deviation is 6.16 .
Base of pyramid, a = 756 ft
= 252 yards (1 ft = 0.333 yards)
Height of pyramid, h = 480 ft
= 160 yards
(a). For a square pyramid, we have:
Volume =
=
= 33,86,880 cubic yards
Hence, volume of the Great Pyramid = 33,86,880 cubic yards
(b). Volume of limestone block = 1.5 cubic yards
Number of limestone blocks needed to construct the Great Pyramid = Volume of pyramid / volume of limestone block
= 33,86,880 / 1.5
= 22,57,920 limestone blocks