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DochEvi [55]
3 years ago
14

Which description is paired with its correct expression?

Mathematics
2 answers:
Rudiy273 years ago
8 0

Answer:

D-twice the difference of nine and a number squared; 2 (9 minus n squared)

Step-by-step explanation:

Got it right on test

Lunna [17]3 years ago
3 0

Answer:

four less than the quotient of a number cubed and seven, increased by three (\frac{n^3}{7} -4)+3

five times the difference of a number squared and six

5(n^2 -6)

nine more than the quotient of six and a number cubed, decreased by four

9+\frac{6}{n^3}-4

twice the difference of nine and a number squared

2(9-n^2)

Step-by-step explanation:

Let n the number of interest we have this:

four less than the quotient of a number cubed and seven, increased by three (\frac{n^3}{7} -4)+3

five times the difference of a number squared and six

5(n^2 -6)

nine more than the quotient of six and a number cubed, decreased by four

9+\frac{6}{n^3}-4

twice the difference of nine and a number squared:

2(9-n^2)

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Step-by-step explanation:

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saveliy_v [14]

Answer:

37.27% probability that he or she will have a heart attack.

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

P(B|A) = \frac{P(B)*P(A|B)}{P(A)}

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question:

Event A: Periodontal disease

Event B: Heart attack

Researchers discovered that 82% of people who have suffered a heart attack had periodontal disease, an inflammation of the gums.

This means that P(A|B) = 0.82

Only 33% of healthy people have this disease.

This means that P(A) = 0.33

Suppose that in a certain community heart attacks are quite rare, occurring with only 15% probability.

This means that P(B) = 0.15

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37.27% probability that he or she will have a heart attack.

6 0
3 years ago
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