How many different ways 5 people a, b,c, d,e sit in a row in movie theater if a and b must sit together, c must sit to the right of but neceraily next to b , d and e will not sit next to each other?

Twelve less than a number is at most 20

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose