Answer:
3/4
Step-by-step explanation:
A: students present
B: students on time
P(all students present and on time) = P(A and B) = 3/10
P(all students present) = P(A) = 2/5
P(A and B) = P(A).P(B|A) where P(B|A) is the probability of everyone being on time given that everyone is present
So P(B|A) = P(A and B) /P(A) = 3/10 ÷ 2/5 = 3/10 * 5/2 = 15/20 which can be reduced to 3/4 by dividing numerator and denominator by 5
Answer:

Step-by-step explanation:

Answer:
r = 9 that's your answer.
Hope it's correct, appreciate if you could let me know
Step-by-step explanation:
Eating my lunch break is gonna you wanna I was like a a little ninja but you didn’t want me to come to pick y’all lol I gotta is a time to go eat some lunch or later in my day or just let y’all go bye see y’all later love y’all and I have a a lot going on in my house I don’t have any hw I want y’all I want you can you guys come over and play it for like three minutes and I play ooooo you want me a big big house I don’t wanna is that iiiiiioooo was the night you got me a big play bye I love y’all so bye love y’all I love y’all so bye love y’all so I love you so bye love you too love y’all so bye love you too love y’all so bye love you bye love