<span>If F is a conservative vector fields, then the function f, is called a potential function for F. Example the vector field F(x, y) = y i+x j is a conservative vector field with a potential function of f(x, y) = xy because â‡f =<y,x></span>
1 1/3. One whole number is 3/3 so 3/3=1 then u put 1/3
Answer:
The minimum sample size is 610.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
Population standard deviation is $6300, so
Suppose we want to determine the minimum sample size required to give us a 95% confidence interval that estimates, to within $500, the average salary of a state employee.
This is n when M = 500. So
Rouding up
The minimum sample size is 610.
Answer:
A
Step-by-step explanation:
Answer:
f-1(x)=-x-
Step-by-step explanation:
First, switch f(x) to the variable "y".
y=-x-8
Next, swap "x" and "y" with each other.
x=-y-8
Next, lets move the denominator of 2 to the other side by multiplying both sides by 2. Your result will be...
2x=-3y-16
Now move -16 to the left side.
16+2x=-3y
To get "y" by itself, lets divide each side by -3. Our result is...
y=-x-
To finish the problem off, replace y with f-1(x) and your complete answer will be...
f-1(x)=-x-