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ad-work [718]
3 years ago
8

A bag contains 2 red marbles and 4 green marbles. two marbles are drawn at random. one marble is drawn and not replaced. then a

second marble is drawn. what is the probability that the first marble is green and the second one is red?
Mathematics
1 answer:
Ksivusya [100]3 years ago
6 0
4/6 for green and 2/5 for red since first wasn't replaced.
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a survey of factories in five northeastern states found that 10% of the 300 workers surveyed were satisfied with the benefits of
DiKsa [7]
Well I don't know if i'm answering the question, but 30 workers surveyed were satisfied with the benefits they received from the employers because 300 multiplied by .10 is 30. Hope my answer is useful.

5 0
3 years ago
A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to
Archy [21]

Answer:

0.2916, 0.1488, 0.0319

Step-by-step explanation:

Given that a sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to have oil added.

Since each trial is independent there is a constant probability for any random car to need oil is 0.10

Let X be the number of cars that need oil

A) Here X is BIN(4,0.1)

P(X=1) = 4C1(0.1)(0.9)^3 \\= 0.2916

B) Here X is Bin (8, 0.1)

P(x=2) = 8C2 (0.1)^2 (0.9)^6\\\\=0.1488

C) Here X is Bin (20,5)

P(x=5) = 20C5 (0.1)^5 (0.9)^{15} \\=0.0319

3 0
3 years ago
Which of the following is the most appropriate unit to describe the rate at which people are entering a theme park?
ad-work [718]

The <u><em>correct answer</em></u> is:

d) People per hour, because the dependent quantity is the people

Explanation:

In this situation, the two quantities are people and hours. These are the two things in this problem we can count or measure.

The independent variable is the one that causes a change, while the dependent variable is the one that <em>gets</em> changed. In this situation, the number of people change every hour; this means the number of people <em>gets</em> changed, which makes it the dependent variable. This means that the independent variable must be time.

Since people is dependent and time is independent, "people per hour" would be the best form of this statement.

6 0
3 years ago
ILL GIVE BRAINLEST
lukranit [14]

Answer:

not a function

Step-by-step explanation:

3 - 2 = 1

2 - 5 = -3

5-6 = -1

6-7 = -1

4 0
3 years ago
Read 2 more answers
What is the multiplicative inverse of 1 over 2
SpyIntel [72]

Answer:

2

explanation;

it just is

6 0
3 years ago
Read 2 more answers
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