Melanie wants to put ribbon around the circumference of a circular section of the city park ribbon comes in rolls of 40 feet the radius of the section of the park is 100 feet how many rolls of ribbon should Melanie buy

Find the value of x that will make l ll m

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.

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?