Which of the following equations demonstrate that the set of polynomials is
1 answer:
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Answer:
Step-by-step explanation:
Expression for the rectangular area and perimeter are, respectively:
After some algebraic manipulation, area expression can be reduce to an one-variable form:
The first derivative of the previous equation is:
Let the expression be equalized to zero:
The second derivative is:
According to the Second Derivative Test, the critical value found in previous steps is a maximum. Then:
The maximum area is:
Answer: B. 95.0
Step-by-step explanation:
In statistics , the famous empirical rule says that " if the data is normally distributed then 68% of the observations will be contained within standard deviations from the arithmetic mean, 95% of the observations will be contained within
standard deviations from the arithmetic mean and 99.7% of the observations will be contained within
standard deviations from the arithmetic mean".
Hence, B is the correct answer.