Will mark brainliest!Triangle ABC has been rotated 90° to create triangle DEF Write the equation, in slope-intercept form, of the side of triangle ABC that is perpendicular to EF You must show all work to receive credit.

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.