Mathematics
Mathematics, 20.11.2020 17:40, s108870

Keno is a casino game where you choose a number. You make a $1 bet on this number and if this number is chosen, you win $3. You have a 0.25 chance of your number being chosen. a) What would the random variable X represent in this scenario?

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Answers: 3
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answered: Guest

 

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

 

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

Answer
answered: Guest
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