If a triangle has one side with a length of 10 meters and a second side with a length of 14 meters, what are possible lengths of the thrid side

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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.

How do i put 3(x+7) in distributive property