Step-by-step explanation:
Area = l × b
= 9ft × 8ft
= 72ft²
Answer:
Step-by-step explanation:
Since their both negatives, February should be the colder tempuerter.
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
The answer is 5b-3a+1/ab!
5y-5y^2-5+2+2y+3y^2-1
collect like terms
7y-2y^2-4
reorder the terms
-2y^2+7y-4
-2y^2+7y-4 is your final answer, I hope this helps!