If events A and B are independent, what must be true?A.) P(AB) = P(B) B.) P(A/B) = P(A)
C.) P(A) = P(B)
D.) OP(AB) = P(BIA)

B.) P(A/B) = P(A)

Step-by-step explanation:

If two events, A and B are independent:

We have that:

Conditional Probability

We use the conditional probability formula to solve this question. It is

In which

P(B|A) is the probability of event B happening, given that A happened.

is the probability of both A and B happening.

P(A) is the probability of A happening.

Since they are independent:

Then

So

, or either:

, and thus, the correct answer is given by option B.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.