25. Find the circumference of a circle with radius of 18 in. Leave your answer in terms of u.
54 In.
36 in.
18 in.
324 in.

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Corresponding angles are a. always b. sometimes c. never congruent