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:
What language is this so I can transalate and answer. If this even us a language
Step-by-step explanation:
Answer:
The slope is 3/5
Step-by-step explanation:
Given:
(1, 2) and (6, 5)
Slope(m) Formula:
m = (y2 - y1)/(x2 - x1)
m = (5 - 2)/(6 - 1)
m = 3/5
Answer:
D= 49/8
Step-by-step explanation:
Cross-multiply.
(2d-5)/2 = (5d+2)/9
(2d−5)*(9)=(5d+2)*(2)
18d−45=10d+4
Subtract 10d from both sides.
18d−45−10d=10d+4−10d
8d−45=4
Add 45 to both sides.
8d−45+45=4+45
8d=49
Divide both sides by 8.
d= 49/8
So the answer is 49/8
I hope it's right!
Answer:
Step-by-step explanation:
15 boys + 12 girls = 27 students
15:27 = 5:9
