If each password must contain at least one upper-case letter, one lower case letter and one number, how many passwords are there? unanswered

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm. dist(80,475,33,1) =norm. inv(0.80,475,33) =norm. s.inv((80-475)/33)?

Ineed with number 6 , explain how to get 1978

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?