I hope this helps.....
Explanation:
I took this in 9th grade so I know how to do this kind of stuff
Answer:
Step-by-step explanation:
Total marble = 8+5+4 = 19
n(Y) = 8, n(B) = 4 and n(R) = 5
Prob(R) = 5/17
Prob(B) = 4/16 {one marble is pulled out already}
Prob(R and B) = 5/17 × 4/16
= 5/17 × 1/4
= 5/68
The answer would be x = -9
For this question, building A would have 36 floors, and building B would have 24 floors. I hope I helped!
Please let me know if I was right! Thanks!