Paper and Pencil Construction: Construct a Line Perpendicular to a Given Line through a Point on the Line

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

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

What is the circumference of the pie