Arectangular room needs 120 square feet of carpet. the width of the room is 2 feet less than its length. find the length and width of the room.

In the 30-60-90 triangle below side s has a length of and side r has a length

Find two numbers if their sum is 91 and the ratio is 6: 7?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables