What iS an apperturance?

What times table does 137 go into? Is 8 km equal greater than or less than 9000 m? How many billions are 100 millions? How many gallons does a 14 inch x 50 inch x 6 inch container hold? How do you find 85.0 percent in percent yield? Convert 2.1 kilometers to meters? What is the lowest common multiple of 12 14 and 16? What is 21 over 20 as a mixed number? What does mx equal in roman numerals? How sum under consideration is calculated in life insurance? Is a square a curve of constant width? What is the pattern -4 -9 -16 -25 -36 -x -y -z -100? Which pair of consecutive integers is 9.6 between? Which choice describes a kite? What plus 3.6 equals 4.5 plus 3.3? Is an isosceles triangle similar to an equilateral triangle? What is the LCM of 200 250 350 800? What does big data mean? Why do we use variables? what proponents develop standard CMETLs for?