The air in a room 16 ft by 10 ft by 10 ft is 4% carbon monoxide. Starting at tequals0, fresh air containing no carbon monoxide is blown into the room at a rate of 200 ft cubed/min. If air in the room flows out through a vent at the same rate, when will the air in the room be 0.01% carbon monoxide?

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?

This question is hard for me to answer can you me. the question is find the value of x.