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amid [387]
2 years ago
7

A bag contains 1 blue, 2 green, and 2 red marbles. You choose a marble with one hand and then a second marble with the other han

d. What is the probability that you will first choose a red marble followed by a green marble?
Mathematics
2 answers:
katrin2010 [14]2 years ago
6 0

The probability that you will first choose a red marble followed by a green marble is 20%.

<h3><u>Probabilities</u> </h3>

Given that a bag contains 1 blue, 2 green, and 2 red marbles, and you choose a marble with one hand and then a second marble with the other hand, to determine what is the probability that you will first choose a red marble followed by to green marble the following calculation must be made:

  • 1 + 2 + 2 = 5
  • 2/5 x 2/4 = X
  • 0.4 x 0.5 = X
  • 0.2 =X
  • 0.2 x 100 = 20

Therefore, the probability that you will first choose a red marble followed by a green marble is 20%.

Learn more about probability in brainly.com/question/26677483

zhuklara [117]2 years ago
5 0

The probability of choosing a red marble is 2/5 while the probability of choosing a green marble after a red marble is 1/2

Data;

  • blue = 1
  • green = 2
  • red = 2

<h3>Probability without replacement</h3>

To solve this problem, we have to do probability without replacement.

The total number of marbles in the bag is

1 + 2 + 2 = 5

The probability of choosing a red marble is

Number of read marbles = 2

probability of choosing a red marble is

P = \frac{2}{5}

The probability of choosing a green marble after a red marble is

P = \frac{2}{4} =\frac{1}{2}

The probability of choosing a red marble is 2/5 while the probability of choosing a green marble after a red marble is 1/2

Learn more on probability here;

brainly.com/question/251701

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10

Step-by-step explanation:

26^2-24^2=100

sqrt of 100 is 10

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1. a motor car race is 500 miles long and consists of completing laps of a circular speedway
Zarrin [17]

The function y = 2.5x + 500 represents the total number of miles if the motor car race is 500 miles long, option (d) is correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have:

y represents the number of miles a motor car has left to go in the race

x represents the number of laps completed by the motor car

The total number of miles if we consider only circular speedways = 2.5x

The total number of miles:

y = 2.5x + 500  (because 500 is the constant)

Thus, the function y = 2.5x + 500 represents the total number of miles if the motor car race is 500 miles long option (d) is correct.

Learn more about the function here:

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7 0
1 year ago
A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national
Ksju [112]

Answer:

n≅376

So sample size is 376.

Step-by-step explanation:

The formula we are going to use is:

n=pq(\frac{z_{\alpha/2}}{E})^{2}

where:

n is the sample size

p is the probability of favor

q is the probability of not in favor

E is the Margin of error

z is the distribution

α=1-0.98=0.02

α/2=0.01

From cumulative standard Normal Distribution

z_{\alpha/2}=2.326

p is taken 0.5 for least biased estimate, q=1-p=0.5

n=0.5*0.5(\frac{2.326}{0.06})^{2}\\n=375.71

n≅376

So sample size is 376

4 0
3 years ago
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