Darryl has written 60 percent, or 12 pages of his history report. darryl wants to figure out how many pages he needs to write.

Step 4.

Darryl should have put 12 in the denominator

Hope this helps!

P.S. Pls make be Brainliest

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

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