The height of a tree is 1200 centimeters. What is the height of the tree in feet? (1 in = 2.54 cm)

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

The reflexive property of congruence lets you say that ∠pqr ≅

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.