Answer:
Step-by-step explanation:
If x = 3 is a root of a polynomial f(x), then x - 3 is a factor of this polynomial.
If x = -2 is a zero of a polynomial function f(x), then f(-2) = 0 and x - (-2) = x + 2 is a factor of f(x).
If x = -1 is an x-intercept of the function, then y = 0 and x - (-1) = x + 1 is also a factor of the function f(x).
Therefore, the polynomial expression is
In standard form:
Answer:
Lets start with the given system of linear equations In order to solve for one variable, we must eliminate the other variable. So if we wanted to solve for y, we would have to eliminate x (or vice versa). So lets eliminate x. In order to do that, we need to have both x coefficients that are equal but have opposite signs (for instance 2 and -2 ...
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
14x-1=x+12
13x=13
x=1
x=12
1=12
=13
Answer:
Multiple Answers
Step-by-step explanation:
- It is algebraically defined (that is, there is an equation you can use to calculate its value).
The mean is the average of our numbers, it is easy to calculate. The formule we use to calcule the mean is:
mean =
Where N is the number of values we have in our sample.
(We divide the sum of our values by the number of data we have in our sample).
- It is easily influenced by extreme scores.
If we have extreme scores in our sample our mean could be affected by them. To avoid this we can adjust our sample. We can do this by eliminate the values that are in the extreme of our ordened data (we can just avoid the 10% of the largest data and the 10% of the smallest data in our sample) the mean of the rest of the data we have is the adjusted mean.