We use this expression in casual conversation to mean there are so many additional factors, items etc. that it's too inconvenient or tiring to list, repeat, etc. Thus only the key point(s) are mentioned.
Same mathematical signs equal plusDifferent mathematical signs equal minusPlus Plus = Plus (+)(+) = +Minus Minus = Plus (-)(-) = +Plus Minus = Minus (+)(-) = -Minus Plus = Minus (-)(+) = -So the...
The mean of a set of numbers is the average. That is to say, all the numbers added together and divided by the number of the numbers. the answer is 30.5