Answer:
c > 4
Step-by-step explanation:
Let the number of calls to broker = c
Since Brea invested $500 every time she calls, the total amount invested at any time will be :
Investment at any time = 500c
Transactional cost paid to the broker= 11c
500c - 11c > 2000------------------------------------- (1)
489 c > 2000
c > 2000/489
c > 4.08
c > 4
This implies that Brea must make more that four (4) calls to the Broker to invest more that $2000 .
The height of the triangular pyramid will be equal to H=12 feet.
<h3>What is a triangular pyramid?</h3>
A triangular pyramid is a pyramid having triangular faces the other sides of the pyramid are simliar triangles.
It is given that:-
The Volume of the pyramid=80 cubic meters
The Base area of the pyramid=20 square meters
The height of the pyramid=?
We know that the volume of a pyramid is given as:-
V=(1÷3)x Base area x height
V=(1÷3)x20 x H
H=(80x30)÷20
H=12 feet
Hence the height of the triangular pyramid will be equal to H=12 feet.
To know more about pyramid foliow
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Answer:
<u>The answer is x = -2</u>
Step-by-step explanation:
Let's solve for x the equation -3(x+5)=-9, this way:
-3 (x + 5) = - 9
-3x - 15 = -9 (Solving the parenthesis)
-3x = -9 + 15 (Adding 15 at both sides)
-3x = 6
x = 6/-3 (Dividing by -3 at both sides)
x = -2
<u>The answer is x = -2</u>
Answer:
The approximate standard deviation of the sampling distribution of the mean for all samples of size n is
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean and standard deviation , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation .
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
The mean life expectancy of a certain type of light bulb is 945 hours with a standard deviation of 21 hours
This means that .
What is the approximate standard deviation of the sampling distribution of the mean for all samples of size n?
The approximate standard deviation of the sampling distribution of the mean for all samples of size n is
Y = x + a number
or it can have numbers in front of the letters