Simple random sampling uses a sample of size n from a population of size N to obtain data that can be used to make inferences ab
out the characteristics of a population. Suppose that, from a population of 52 bank accounts, we want to take a random sample of four accounts in order to learn about the population. How many different random samples of four accounts are possible
1 answer:
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Answer:
see the explanation
Step-by-step explanation:
we know that
Using inverse operations, the formula can be rearranged to solve for any one of the variables that might be unknown.
we have
The operation of multiplication is used in the formula
so
The inverse operation of division should be used to isolate the variable H
so
Divide both sides by LW
simplify
Answer:
The lower supports are <u>Congruent Rectangles</u> and the area of the two supports is<u> 24 square meters.</u>
The upper arch can be decomposed as one semicircle with radius<u> 6 </u>meters minus a semicircle with radius 3 meters.
The area of the archway is <u>(13.5 π</u> + 24) square meters.
Step-by-step explanation:
See attachment for the firgure,
In order to determine the area of archway = The area of upper support + area of lower support.
As given, the lower support are two congruent rectangles consists of dimension 3 m × 4 m
Therefore, the area of lower support can be written as,
The area of lower support = 3 × 4 + 3 × 4 = 12 + 12 = 24 square m.
Now, the upper support arch can be decomposed as the two concentric semi circles having radius 3 m and 6 m,
Hence, the area of the upper support = Area of semi circle having radius i.e 6 m - Area of semi circle having radius i.e 3 m
=> π6²/2 - π3²/2= 27π/2= 13.5π square m
Therefore, the area of the archway = (13.5 π + 24) square meters
