What is the square root of 34? and -4/11? which set of numbers do they belong? whole number, integer natural number irrational or rational?

Find the domain of the following expression: 1/(√x)-2

What does the sign of the slope tell you about a line?

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?