Which of the following is a simpler form of the expression sin(0)sec(0)/cos(0)tan(0)

What is the sum of these mixed numbers 4 2/3+ 3 1/9

Proving the congruent supplements theorem

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours