A diving vessel descends below the surface of the water at a constant rate so that the depth of the vessel after 3
minutes, 6 minutes and 9 minutes is 8 meters, 16 meters and 24 meters respectively,
If n is the number of minutes it takes to reach a depth of 56 meters, solve for .

Describe all the numbers that when rounded to the nearest thousand are 645,000

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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.