Math help plz! Check for extraneous solutions. Giving brainlist
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For number one you have to do 45.6 Divided by 2.54 to get your answer and your answer is going to be 17.95 but The answer actually continues but but sometimes there’s going to be a lot of numbers and people don’t wanna write it down so they’re just gonna cut it short I hope that kind of helped
We want to find the mean of two elements in a set, given that we know the other elements of the set and the mean of the whole set.
The answer is: -490
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For a set with N elements {x₁, x₂, ..., xₙ} the mean is given by:
Here we know that:
- The mean of the set is 0.
- The set has 1000 elements.
- 998 of these elements are ones, the other two are A and B.
We want to find the mean of the values of A and B.
First, we can start by writing the equation for the mean:
We can rewrite this as:
And we have 998 ones, then:
Now we have B isolated.
With this, the mean of A and B can be written as:
So we can conclude that the mean of the other two numbers is -490.
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