Alisa's family planted 7 trees in their yard. the
park down the street has 147 trees. alisa guessed
that the park has either 11 or 31 times as many
trees as her yard has. is either of alisa's guesses
correct? use the equation 7n = 147 to justify
your answer.

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

W-16=-12 solve each one step equation plz

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.