What is 1 fifth of the air?

9+9 =Solved math problem? What is the minimum value of y in the function y equals 2x2 plus x-1? What r the factors of 11? What quadrilateral has two pairs of equal sides which are not opposite from each other? THE length of the sides of two cubes are in the ratio 23 then the volumes in ratio is -----? How can you tell if a quarter is from Delaware or Denver? Can you guess the next 3 letters in the following series and why? How do you figure out the radius when you dont know the shape? What number is between 4530 and 4610? What does point of aim point of impact mean? What is rectangular coordination system? Why is it so difficult to count the number of bacterial species in nature? How much is 30 percent off of 175 dollars? When multiplying a whole number by a fraction will the product be less than greater than or equal to the whole number? How maney seconds in a day? What two prime numbers equal 91? What is 40cm of 1m? What is the value of a silver dime? Is XXL is equal to 2L? What is 452 as a decimal?