What are the zeros of f(x) = x2 - 12x+ 36? A. X = -4 and x = 9
B. x = -6 only
C. x= -6 and x = 6
D. x = 6 only

D

Step-by-step explanation:

x^2-12x+36

type into desmos and see where it touches the the line

yes. we do proportions in probabilities.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560