Perform the operation(s) and write the answer in simplest form. (12+13)÷154
1 answer:
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Answer:
The appropriate answer is "144".
Step-by-step explanation:
Given:
Population standard deviation,
Margin of error,
%
Or,
Now,
Critical value,
=
=
=
The minimum sample size will be:
⇒
By putting the values, we get
or,
To solve this problem, we need to know the formula of the surface area of a triangular prism. The formula is: A = 2
+ (a+b+c) * h
Now we can substitute values and solve
A = 2(0.5 * 4 * 3) + (3+4+5) * 20
A = 12 + 240
A = 252
That means that the answer to this question is 252 square feet.
Now we can substitute values and solve
A = 2(0.5 * 4 * 3) + (3+4+5) * 20
A = 12 + 240
A = 252
That means that the answer to this question is 252 square feet.