This is why you rarely see bats hanging in an attic in the winter-it is just too cold for survival. People who have a colony of bats in their home often describe a scratching sound or occasionally get a bat inside their home. We believe that the bats move around and adjust their position based upon the temperature.
The mean of a set of numbers is their average. You find the average of a set of numbers by adding them up and dividing by the number of numbers you have. So, the mean of 3,4,6,9, and 3 is: 3 + 4 + 6 + 9 + 3 25 ----------------- = -- = 5 5 5.
In mathematics, an expression (or mathematical expression) is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, punctuation, grouping, and other aspects of logical syntax.n general the meaning of expressions is not limited to designating values; for instance, an expression might designate a condition, or an equation that is to be solved, or it can be viewed as an object in its own right that can be manipulated according to certain rules.