Natalia has a savings account at a bank that charges $12 fee for every month her balance falls below $1,000. Her balance is $1,427.42 when she withdraws $350. After the transaction, what is her balance? * $965.42 $977.42 $638.00 O $1,677.42​

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.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.