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lianna [129]
2 years ago
15

I need so much help can anyone help me

Mathematics
1 answer:
Sonbull [250]2 years ago
3 0

Answer:

i don't really

Step-by-step explanation:

know that because i am in 6th grade soooooooooooooooooo??????

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Four cards are dealt from a standard fifty-two-card poker deck. What is the probability that all four are aces given that at lea
elena-s [515]

Answer:

The probability is 0.0052

Step-by-step explanation:

Let's call A the event that the four cards are aces, B the event that at least three are aces. So, the probability P(A/B) that all four are aces given that at least three are aces is calculated as:

P(A/B) =  P(A∩B)/P(B)

The probability P(B) that at least three are aces is the sum of the following probabilities:

  • The four card are aces: This is one hand from the 270,725 differents sets of four cards, so the probability is 1/270,725
  • There are exactly 3 aces: we need to calculated how many hands have exactly 3 aces, so we are going to calculate de number of combinations or ways in which we can select k elements from a group of n elements. This can be calculated as:

nCk=\frac{n!}{k!(n-k)!}

So, the number of ways to select exactly 3 aces is:

4C3*48C1=\frac{4!}{3!(4-3)!}*\frac{48!}{1!(48-1)!}=192

Because we are going to select 3 aces from the 4 in the poker deck and we are going to select 1 card from the 48 that aren't aces. So the probability in this case is 192/270,725

Then, the probability P(B) that at least three are aces is:

P(B)=\frac{1}{270,725} +\frac{192}{270,725} =\frac{193}{270,725}

On the other hand the probability P(A∩B) that the four cards are aces and at least three are aces is equal to the probability that the four card are aces, so:

P(A∩B) = 1/270,725

Finally, the probability P(A/B) that all four are aces given that at least three are aces is:

P=\frac{1/270,725}{193/270,725} =\frac{1}{193}=0.0052

5 0
3 years ago
Quiz Instructions
bazaltina [42]
I believe it would be dilated by 3/4

If you think of a rectangle, let’s say it is 8 by 4, the perimeter of this rectangle would be 24.

Now if you dilate the side values, you get 6 by 3 and the perimeter equals 18

So you then get 18/24 which is equal to 3/4

Hope this is right and makes sense! Have a good day!

7 0
3 years ago
What is 2+2÷4+34-2÷20= ____
Vadim26 [7]
Follow pemdas
2+(1/2) +34- (1/10)
2.5 + 34 - .1
36.5-.1
36.4
3 0
3 years ago
Read 2 more answers
At a physics convention, 10 companies set up equal sized square booths in a row along one wall of the convention center. The boo
exis [7]
I'm not 100% sure what this all means because I'm in a different school but, I believe they have a side length of 4600.


P.S. If it doesn't work, I am so sorry
3 0
3 years ago
(07.03)
Sloan [31]
The answer would be log base 2 of 6 over log base 2 of 3

8 0
3 years ago
Read 2 more answers
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