Answer:
420^69
Step-by-step explanation:
Blazen it
Answer:
weeks.
Step-by-step explanation:
We have been given that a km stretch of road needs repairs. Workers can repair kilometer of road per week.
To find the number of weeks it will take to repair the stretch we will divide by
Upon converting our mixed fractions into improper fractions we will get,
Dividing a fraction with another fraction is same as multiplying the 1st fraction with the reciprocal of second fraction.
Therefore, it will take weeks to repair the stretch of the road.
The volume of such a can with base radius
and height
would be
We desire the base's circumference and the can's height to add to 120, i.e.
Substituting this into
allows us to reduce the volume to a function of a single variable
:
Taking the derivative with respect to
yields
Set this equal to 0 and find any critical points:
This suggests the can will have maximum volume when its radius is
cm, which would give a volume of about 20,371 sq. cm.
Answer:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
The expected value is given by this formula:
For this reason the best option is:
D. E (X )=np
Step-by-step explanation:
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
Solution to the problem
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
The expected value is given by this formula:
For this reason the best option is:
D. E (X )=np