What is the mean of all three-digit positive integers whose digits are in the set (2,0,1,9)

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

Which of these tools or constructions is used to inscribe a hexagon inside a circle?