How many kilometers can that tortoise walk in 1 hour

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?