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Mumz [18]
3 years ago
6

Four cards numbered 1,5,8, and 9 are placed in a bag. A card is drawn at random and then replaced. The card is drawn at random a

gain. What is the probability that both cards drawn have the number 9?
A. 1/16
B. 1/9
C. 1/4
D. 1/2
WILL MARK BRAINLIEST
Mathematics
2 answers:
anzhelika [568]3 years ago
8 0

Answer: D

Step-by-step explanation:

so we know the probability of drawing a 9 is 25 percent  or 1/4 because 9 is only one and doesn't repeat.

So the cards we drawn cards we drawn 2 times so multiply 1/4 times two.

1/4 * 2/1= 2/4 = 1/2

Law Incorporation [45]3 years ago
3 0

Answer:

The answer is D. 1/2 I'm pretty sure. I'm usually pretty good at probability. Keep in mind this may be wrong.

Step-by-step explanation:

There is a 1/4 chance that ONE card drawn will have the number nine. That is only for one though. For 2 cards, it would be a 2/4 chance. Since it is not one of the answers, do the next best thing and simplify the probability. Divide 2/4 by 2 and it equals 1/2.

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Answer:

The Inequality For determining number of equation written by Mustafa for school paper is x+\frac{1}{4}x+ \frac{3}{2}x\geq 22.

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Step-by-step explanation:

Given:

Combined Total Number of articles = 22

Let the number of articles written by Mustafa be 'x'.

Now Given:

Heloise has written \frac{1}{4} as many articles as Mustafa has.

Number of article written by Heloise = \frac{1}{4}x

Gia has written \frac{3}{2} as many articles as Mustafa has.

Number of article written by Gia = \frac{3}{2}x

Now we know that;

The sum of number of articles written by Mustafa and Number of article written by Heloise and Number of article written by Gia is greater than or equal to Combined Total Number of articles.

framing in equation form we get;

x+\frac{1}{4}x+ \frac{3}{2}x\geq 22

Hence the Inequality For determining number of equation written by Mustafa for school paper is x+\frac{1}{4}x+ \frac{3}{2}x\geq 22.

Now Solving the Inequality we get;

Taking LCM for making the denominator common we get:

\frac{x\times 4}{4}+\frac{1\times1}{4\times1}x+ \frac{3\times2}{2\times2}x\geq 22\\\\\frac{4x}{4}+ \frac{x}{4}+\frac{6x}{4}\geq 22\\\\\frac{4x+x+6x}{4} \geq 22\\\\11x\geq 22\times4\\\\11x\geq 88\\\\x\geq \frac{88}{11} \\\\x\geq 8

Hence Mustafa has written more than 8 articles.

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