Mathematics, 29.03.2020 08:17 diemiten

Please help ASAP will get 100 points and Brainliest!

A middle school principal has 80 keys on her key chain to distribute to staff on the first day of school. Of these 80 keys, 60 open classroom doors, 40 open the door to the teachers' lounge, and 30 open classroom doors and the teachers' lounge. Using this information, answer each of the following questions.
Let C be the event that a randomly selected key opens a classroom and T be the event that a randomly selected key opens the teachers' lounge.
What is P(C), left parenthesis, C, right parenthesis, the probability that a key opens a classroom?
What is P(T), left parenthesis, T, right parenthesis, the probability that a key opens the teachers' lounge?

What is P, the probability that a key opens a classroom and the teachers' lounge?
What is P, the probability that a key opens a classroom or the teachers' lounge?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 14:00

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

Answers: 1

Answer

Mathematics, 21.06.2019 17:30

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Answers: 1

Answer

Mathematics, 21.06.2019 21:30

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Answers: 1

Answer

Mathematics, 22.06.2019 05:00

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.

Answers: 1

Answer

You know the right answer?

Please help ASAP will get 100 points and Brainliest!

A middle school principal has 80 ke...

Questions