David goes to a fast food restaurant and order some tacos and burritos. He sees on the nutrition menu that the tacos or 170 cal and the burritos are 420 cal. If he order six items and consumes a total of 2020 cal how many tacos and how many burritos did David order and eat?

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

What does the relationship between the mean and median reveal about the shape of the data

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