Answer:
Step-by-step explanation:
Given
----- variance
------------ sample
Required
Determine the S.E
The estimated standard error (S.E) for the sample mean is calculated using the following formula:
Where
So:
Hence: the estimated standard error for the sample mean is 2
Answer:
x+9
Step-by-step explanation:
if you expand...you could get x+9, which is the same as the given expression
Answer:
There are 23 cats for every 36 dogs at the city pound
Step-by-step explanation:
This means that for every group of 92 cats at the city compound there is a group of 144 dogs. So it also means that for every group of 23 cats there is a group of 36 dogs.
92 to 144 or 92/144 = 23/26 or 23 to 36
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Hope This Helps Out</h2>
Answer:
3x + y = 21
x = 2.5
7.5 + y = 21
y = 13.5
shirt cost $13.50
Step-by-step explanation:
Answer:
20-6=14 students not in math club
14:20
if it wants you to simplify it then: 7:10
Step-by-step explanation:
I hope this helps :)
