5b let random variable x represent the number of heads minus the number of tails when a fair coin is tossed 9 times.
what is pr(x=0)?
what is pr(x=3)?
let random variable y represent the number of heads minus the number of tails when a fair coin is tossed 8 times.
what is pr(y=0)?
what is pr(y=3)?

y do u put "subscirbe to ence" on a app for ppl who need with their work?

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

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