Abag contains red and blue marbles, such that the probability of drawing a blue marble is 3/8 .an experiment consists of drawing marble, replacing it, and drawing another marble. the two draws are independent. a random variable assigns the number of bl marbles to each outcome. calculate the expected value of the random variable. a.3/4 b.1/3 c.3/8 d. 2/3

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ddd

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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

step-by-step explanation: