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Likurg_2 [28]
3 years ago
12

An Urn contains two white marbles and one black marble. A marble is drawn from the Urn without replacement and put aside without

my seeing it. Then a second marble is drawn, and it is white.
What is the probability that the unknown removed marble is white, and what is the probability that it is black?
Mathematics
1 answer:
algol [13]3 years ago
4 0

Answer:

Step-by-step explanation:

No. Of white marble n(W) = 2

No. Of black marble n(B) = 1

Total no. Of marble N = 2 + 1 = 3

Prob(1st is white) = n(W)/N = 2/3

Prob(1st is black) = n(B)/N = 1/3

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What is the ratio of the two values and what new value do they produce? $280 in 7m
3241004551 [841]

Answer:

The ratio between two values A and B is just the quotient between these two values:

ratio = A/B

a) $280 in 7m

Here the ratio is:

$280/7m = $40/m

This also can be read as:

$40 per meter.

b) 105 miles in 2 hours

Here the ratio is:

105mi/2h = 52.5 mi/h

This also can be read as:

52.5 miles per hour

c) $33 for 5lb

The ratio is:

$33/5lb = $6.6/lb

This can be read as:

$6.6 per pound.

d) 50 pages in 2 hours

the ratio is:

(50 pages)/2h = 25 pages/h

this can be read as:

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4 0
2 years ago
Simplest form of 6 3/8 + 7 5/6 =
strojnjashka [21]

Step-by-step explanation:

first, add the whole numbers

6 + 7 = 13

then the fractions

3/8 + 5/6

we need to get common denominators

do you know how to do that

6 0
2 years ago
What is 4 - 2 + 8 divided by 2
andriy [413]
Answer: 5

example:

4-2=2+8=10/2
=(2)
7 0
3 years ago
Read 2 more answers
Solve for x: 6x – 8y = 12
Tcecarenko [31]

Hi there!


Since we have 2 variables in the given equation, and you only want to solve for one, the other will end up in your answer.


6x + 8y = 12


Step 1) Add 8y to both sides.


6x - 8y + 8y = 12 + 8y 6x = 8y + 12


Step 2) Divide both sides by 6.


\frac{6x}{6} =  \frac{8y + 12}{6}


x =  \frac{4}{3} y + 2


Final Answer -


x =  \frac{4}{3} y + 2


Hope this helps! :D


7 0
3 years ago
Read 2 more answers
Help i 30 points!!!!
LuckyWell [14K]

Answer:

1) 8 2) 3

Step-by-step explanation:

subtract -8 from 0 = 8

same thing with -3

6 0
3 years ago
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