B)
Write down, in words, the number 65 405.

Sixty-five thousand, four hundred and five.

Step-by-step explanation:

Since 65 is in the thousands + ten-thousands place, it must go with "thousand"

Since 405 is in the hundreds, tens, and ones, place, 4 goes with "hundred" and 5 goes with "one".

da freeck kinda math is this just drop out

step-by-step explanation:

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