At eli's pancake house there are 279 dirty coffee mugs and 651 clean coffee mugs. what percentage of the coffee mugs at the pancake house are dirty? write your answer using a percent sign (%). questions

Need same math paper but the back now i hope your able to read it cleary i need with hw

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

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b