The sum of the measures of two complementary angles exceeds the difference of the measures by 72 degrees find the measure of the smaller angle

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Match each inequality to the number line that represents its solution

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.