At the rolling ridge school spelling bee, 75% of the
contestants advanced to the second round and 60% advanced
to the third round. what is the probability that a randomly
selected contestant advanced to the third round given the same
contestant advanced to the second round?
a. 3/20
b. 9/20
c. 7/15
d. 4/5

Option D

Step-by-step explanation:

Call A to the event in which a student advances to the second round.

We know that:

Call B the event in which a student advances to the third round.

We know that:

We then look for the probability of B given A. This is:

In this case, the probability of B and A is equal to the probability of B, since the students who advance to the third round also advanced to the second round before

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: