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What is the mean avagerge?
The "mean" and the "average" of a bunch of different numbers are the same thing. It's the number that they would all have to be if they were all the same number and added up to the same total that they do now.
How can you tell whether two matrices can be added?
If both matrices have the same number of columns and rows ex: {1 2 3 4} can not be added with {5 4} b/c they dont have the same amount of numbers
What numbers equal the same when multiplied and added toghter?
000
marissa subtracted a negative number from a positive number. her result was negative. is that reasonable?
No. When you subtract negative numbers, they have the same effect as if you added a positive number. In this scenario as described, the only result would be a positive number.
How do you define mean number?
The mean number of a number set is the same as the average number of a number set. It is the number that results from adding all of the numbers in a set together and then dividing by the amount of numbers you added together. For example, in the set 1, 2, 3, 4, 5, you add the five numbers together and get 15. There are five numbers in the set, so when you divide 15 by 5, you get 3. This is the mean number.
