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kirill [66]
2 years ago
15

A pouch contains 6 red marbles and 2 blue marbles. A second pouch contains 3 red marbles and 7 blue marbles. A marble will be dr

awn at random from the first pouch and placed in the second pouch without its color being noted. Then a marble will be drawn from the second pouch. If the second marble is​ red, what is the probability that the first marble drawn is​ blue?
Mathematics
1 answer:
aksik [14]2 years ago
4 0

Answer:

2/8

Step-by-step explanation:

because there are 2 blue marbles

add those up with the red marbles(6) and you get 8 marbles. But the chance for picking up a blue marble would be 2/8

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To solve for the coefficient of variation you will need this formula:
CV = (SD/X) x 100 
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             SD = Standard Deviation

To determine which one is more variable, just get the coefficient of both and compare.
                   AGE                                            SALARY
   
  CV = (6/55) x 100                             CV = (4,100/37,000) x 100
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8 0
3 years ago
How do you solve 42 divided by 63
Dafna1 [17]

42  ÷ 63

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420-378=42

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So, how many times does 63 go into 42? Well, it doesn't. So put down a zero on your paper, and then a decimal. So if we add a zero onto 42, it becomes 420. Well, 420 is divisible by 63. In fact, 63 goes into 420 6 times, making a total of 378. 420-378 = 42. Then the process begins again. So you've got a 0.6, and that six just keeps on repeating. On paper, you're gonna wanna put a dash over the six to show that it's repeating.


Anyways, the answer is .66 repeating.

6 0
2 years ago
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***************************************************

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Step-by-step explanation: answer above

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3 years ago
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