Sales â Cost of Sales = Gross Profit â Operating Expenses = Operating Income. Using the operating income margin as an indicator--computed by simply dividing operating income by total sales--will allow you to measure managementâs efficiency in running the business. The higher the margin, the more efficient--this means that operating expenses are consciously guarded as sales grow.
Snakes 'hiss' - It sounds just like the sound humans make when they say the letter 'S' out loud. One of my favourite past-times is driving and exploring with my husband (and my dog). In WikiAnswers, I am constantly On the wallaby.
Best Answer: Most reptiles do not have vocal chords- and no snake or turtle does. However, they can still make several noises, voluntarily and involuntarily. Involuntary noises include hisses when they jerk their heads into the shells, which forces the air in the lungs out to make room.