Please help, Write an recursive formula for a_na n ​ , the n^{\text{th}}n th term of the sequence 28, -14, 7, ...28,−14,7,

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Anyone know? is appreciated! will mark brainliest if correct!

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?