To take the mean of a set of numbers is just to take the average of the set of numbers.
Add all the numbers together and divide this total by the amount of numbers you had. This is the mean.
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Igual>>> ALGEBRA
"And" in algebra usually means addition.
Slope in algebra refers to the rate of change of a function at a given point. This can be used in physics, where on a graph that shows the change in velocity, the value of the slope is equal to the acceleration at that moment in time.
YES!! You use algebra in your everyday lives. Adding is considered an equation. An equation is a problem with an equal sign. An expression has no answer (an equal sign).
It usually refers to an introductory algebra class.