Elena is driving towards her friend's house in another town at a speed of 34 miles per hour. She departs from her house at 2:00 PM and arrives at 3:30 PM.
How far away is her friend's house? Assume that she travels at a constant speed
of 34 mph.

answer: 180

step-by-step explanation:

12-2=10

20-2=18

10x18=180

answer: it's d

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