A statistics teacher organizes a drawing each semester. During this raffle, she writes the names of each of her 100 students on slips of paper, each with an equal chance of winning. Each student has to give up 1 point from his or her final grade to enter. However, the first name she draws will get 20 points extra credit; the second name she draws will get 10 points extra credit; the third name she draws will get 5 points extra credit.
What is the probability distribution of X?

i know the answer is 3

step-by-step explanation:

geometry: triangles

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lessons

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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

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

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step-by-step explanation: