A pile of sand is shaped like a cone with a height of 4 feet and a base diameter of 13 feet. Each cubic foot of sand weighs 90 pounds. Does the pile of sand weigh more than a ton (2000 pounds)? Explain how you know.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

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?

Rationalize the denominator- 12x/√x-10