The sale price of a jacket is 77% of its original price. The jacket originally costs $87. Which expression gives the
most reasonable estimate of the sale price?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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.

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74