Vizzy and Bizzy can demolish a building in 6 days, Ajay and Bizzy can do it in 3, Ajay and Vizzy in 5. How many days does it take all of them working together if Vizzy gets injured at the end of the first day and can't come back?

Is a deceasing linear model or an exponential decay model likely to be a better fit for the data about remembering? ?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

What is the length and width of a 84.5 square foot rug? will mark