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2 years ago

20 POINTS FOR THIS!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Sloan [31]2 years ago

7 0

Answer:

b = 13

Step-by-step explanation:

the value of the discount is a constant, while the total cost of the books is a variable because it depends of the purchase

We can write this equation

5b - 7 = 58

Solve it

1) add 7 at both members

5b -7 + 7 = 58 + 7

5b = 65

2) divide both membera by 5

b = 13

LenaWriter [7]2 years ago

4 0

B=13 add 7 to both numbers then divide by 5

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Step-by-step explanation:

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3 years ago

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In recent years, business failures in the United States numbered 63509. The chemical industry accounted for 9499 of these busine

Ivahew [28]

Answer:

0.1608 = 16.08% probability that the business is in the chemical industry if it is known that the business is located in the Mid-West.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Failed business in the Midwest.

Event B: Chemical industry.

Probability of failed business being in the Mid-West:

7900 out of 63509. So

$P(A) = \frac{7900}{63509}$

Probability of a failed business being a chemical industry in the Mid-West.

1270 out of 63509. So

$P(A \cap B) = \frac{1270}{63509}$

What is the probability that the business is in the chemical industry if it is known that the business is located in the Mid-West?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{\frac{1270}{63509}}{\frac{7900}{63509}} = \frac{1270}{7900} = 0.1608$

0.1608 = 16.08% probability that the business is in the chemical industry if it is known that the business is located in the Mid-West.

5 0

3 years ago