PLEASE HELP! LOTS OF POINTS, DUE SOON! Two large, plastic tubs were filled with soil. The soil was shaped to create a mound in each tub. The starting height of each mound was recorded. The tubs were set outside, side by side. The lid was left off of tub A and a lid was placed on top of tub B. Once a day, one ounce of water was poured over the top of each mound for ten days straight. At the end of the ten days the mound heights were recorded and compared. Is this a valid experimental design to test for wind erosion of soil? A) Yes, because dirt is very heavy. B) No, because ten days is not long enough. C) No, since the type of soil was not identified. D) Yes, steps were outlined for condition with one variable changed, lid on or off.

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52