Answer:
<h3>20</h3>
Step-by-step explanation:
Standard deviation of the mean is expressed as:
SM = s/√n
s is the standard deviation of all invoices
n is the sample size of the invoiced
Given
s = $200
n = 100
Required
Standard deviation of the mean
Substitute the given parameters into the given equation
SM = 200/√100
SM = 200/10
SM = 20
Hence the standard deviation of xbar is 20
Answer:
negative number times negative number gives you positive number.
Step-by-step explanation:
-9x-3
=27
Answer:
see explanation
Step-by-step explanation:
To find k, calculate the ratio of corresponding sides, image to original, that is
k = 
= 
= 
Thus
QR' = × QR = × 21 = 2 × 3 = 6 , that is
x = 6 → C
Answer:
-20.75
Step-by-step explanation:
3/4 as a decimal is 0.75
-20 3/4 = -(20 3/4) = -(20.75) = -20.75
A prism is a solid figure that has two parallel congruent sides that are called bases that are connected by the lateral faces that are parallelograms.
