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.
As far as making noise voluntarily goes, it is quite common for a turtle to do so during battle, courtship, mating and egg-laying. Most turtle noises are hisses; however turtles have also been known to make noises that include grunting, hooting and clucking. What is even more interesting as far as sound goes is that turtles do not have outer ears. They have inner ear structures but do not necessarily respond to noise.