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goldenfox [79]
3 years ago
7

Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putt

ing the marble back in the bag after each draw.What is the best prediction for the number of times that Ellen will draw a blue marble?
Mathematics
2 answers:
sweet [91]3 years ago
7 0

Answer:

No. of times Ellen draws a blue marble = 120

Step-by-step explanation:

No. of red marbles = 3

No. of blue marbles = 2

\text{Probability of drawing a blue marble = }\frac{\text{No. of possible outcomes}}{\text{Total no. of outcomes}}\\\\P(B)=\frac{2}{5}\\\\No. of draws (n) = 300\\\text{So, total probability = }n\times P(B)\\\\=100\times \frac{2}{5}=120.

So, the required probability is 120.

Akimi4 [234]3 years ago
4 0

Answer:

The best prediction would be close to 120, not exactly 120.

Step-by-step explanation:

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Alright, do multiplication first, then division. Then, do subtraction then addition.

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6 0
3 years ago
1.
IRISSAK [1]
Your answer is A 1/15
6 0
3 years ago
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What’s the expression 4m - 17 + 3m - 11
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6 0
3 years ago
Which of the following statements is true?
Vitek1552 [10]

Answer:

B

Step-by-step explanation:

1/9 can be simplified to 1/3 as 1/3 x 1/3 = 1/9  and 49/25 can be simplified to 7/5 as 7/5 x 7/5 = 49/25.

Now looking at both the fraction 1/3 and 7/5

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It is an irrational value as the 3 keeps repeating.

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Thus making the second option the answer.

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