Distance between two straight on a map is 12 cm. If the two streets are actually 2/3rd of a mile apart what is the scale on the map? A.1cm= 18 mi. B.18cm = 1mi. C.1cm = 8mi. D. 8cm = 1mi

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.

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39