Bob and Carol do a job together in 2 hours. Bob can do the job in 6 hours by himself. How long would it take Carol by herself? 8 hours
3 hours
4 hours
6 hours​

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?