Brett has consumed 1,400 calories so far today. He has also burned off 400 calories at the gym. He would like to keep his daily
1 answer:
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Answer:
The probability that the service desk will have at least 100 customers with returns or exchanges on a randomly selected day is P=0.78.
Step-by-step explanation:
With the weekly average we can estimate the daily average for customers, assuming 7 days a week:
We can model this situation with a Poisson distribution, with parameter λ=108. But because the number of events is large, we use the normal aproximation:
Then we can calculate the z value for x=100:
Now we calculate the probability of x>100 as:
The probability that the service desk will have at least 100 customers with returns or exchanges on a randomly selected day is P=0.78.
We know the following relationship:
The domain of a function are the inputs of the function, that is, a function
is a relation that assigns to each element 
in the set A exactly one element in the set B. The set A is the domain (or set of inputs) of the function and the set B contains the range (or set of outputs).Then applying this concept to our function 
we can write its domain as follows:
1. D<span>omain of validity for:
</span>
When:
?
when:
where k is an integer either positive or negative. That is:
To match this with the choices above, the answer is:
<span>"All real numbers except multiples of
"
</span>
2. which identity is not used in the proof of the identity
:
This identity can proved as follows:
The identity that is not used is as established in the statement above:
<span>"1 +cos squared theta over sin squared theta= csc2theta"
Written in mathematical language as follows:
</span>
<span>
</span>
The domain of a function are the inputs of the function, that is, a function
1. D<span>omain of validity for
</span>
When:
when:
where k is an integer either positive or negative. That is:
To match this with the choices above, the answer is:
<span>"All real numbers except multiples of
</span>
2. which identity is not used in the proof of the identity
This identity can proved as follows:
The identity that is not used is as established in the statement above:
<span>"1 +cos squared theta over sin squared theta= csc2theta"
Written in mathematical language as follows:
</span>
</span>
Answer:
Step-by-step explanation:
Since we're finding the product, we have to multiply:
×
You can simplify in this stage by using the "butterfly method", and dividing by
, and
by
, you'd then have:
×
Multiply the numerators and the denominators to get:
~
If you prefer the longer way, again, multiply:
×
Multiply the numerators and the denominators:
Simplify the fraction by dividing both the numerator and denominator by :