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seropon [69]
3 years ago
7

Function that has Domain: x≠-1 Range: y≠2

Mathematics
1 answer:
Degger [83]3 years ago
4 0
I don't understand your question.
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A box contain 12 balls in which 4 are white 3 are blue and 5 are red.3 balls are drawn at random from the box.find the chance th
Anastasy [175]

Answer:

3/11

Step-by-step explanation:

From the above question, we have the following information

Total number of balls = 12

Number of white balls = 4

Number of blue balls = 3

Number of red balls = 5

We solve this question using combination formula

C(n, r) = nCr = n!/r!(n - r)!

We are told that 3 balls are drawn out at random.

The chance/probability of drawing out 3 balls = 12C3 = 12!/3! × (12 - 3)! = 12!/3! × 9!

= 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1/(3 × 2 × 1) × (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

= 220 ways

The chance of selecting 3 balls at random = 220

To find the chance that all the three balls are selected,

= [Chance of selecting (white ball) × Chance of selecting(blue ball) × Chance of selecting(red balls)]/ The chance/probability of drawing out 3 balls

Chance of selecting (white ball)= 4C1

Chance of selecting(blue ball) = 3C1 Chance of selecting(red balls) = 5C1

Hence,

= [4C1 × 3C1 × 5C1]/ 220

= 60/220

= 6/22

= 3/11

The chance that all three are selected is = 3/11

4 0
3 years ago
Someone please help me
bearhunter [10]
B. triangle and triangular prism
6 0
3 years ago
A map has a scale of 1 cm to 20km. Rewrite the scale as a ration in its simplest form.
Lesechka [4]

Answer:

1 : 2000000

Step-by-step explanation:

we have to convert 20km into cm so

20km×100000

=2000000

So ratio is 1:2000000

<h2>MARK ME BRAINLIEST PLS!</h2>
6 0
2 years ago
Read 2 more answers
Is -3 bigger or less then -12
Gnom [1K]

Answer:

bigger

Step-by-step explanation:

-3 is bigger then -12

5 0
3 years ago
Read 2 more answers
The general equation is y=ax squared+bx+c<br><br><br><br> based off true and false
andrew11 [14]
Trueirh3hv3v3ueidheg3
3 0
3 years ago
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