Let X and Y be discrete random variables with joint probability mass function P(X = x, Y = y) =(x + 1)(y + 2) / 54 , for x = 0,1,2 and y = 0,1,2. 0, elsewhere. Calculate E(Y|X = 1).

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

a

b

d

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation

step-by-step explanation:

what is the figure? attach a picture.