Question: The radius of a circle is 4. Using π, how do you write the ratio of the circumference of the circle to the diameter of the circle? Show your work.

For what value of (y) is 3^3/3^y =1/9

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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?