Answer: The value of x is 3.
Step-by-step explanation:
Since we have given that
10,11, 12 and x
Average of above numbers = 9
As we know that
Average is given by
![\dfrac{\text{Sum of observation}}{\text{Number of observation}}\\\\\\\dfrac{10+11+12+x}{4}=9\\\\10+11+12+x=9\times 4\\\\33+x=36\\\\x=36-33\\\\x=3](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctext%7BSum%20of%20observation%7D%7D%7B%5Ctext%7BNumber%20of%20observation%7D%7D%5C%5C%5C%5C%5C%5C%5Cdfrac%7B10%2B11%2B12%2Bx%7D%7B4%7D%3D9%5C%5C%5C%5C10%2B11%2B12%2Bx%3D9%5Ctimes%204%5C%5C%5C%5C33%2Bx%3D36%5C%5C%5C%5Cx%3D36-33%5C%5C%5C%5Cx%3D3)
Hence, the value of x is 3.
144.4 is the answer when rounded of to the nearest tenth(1/10 or 0.1)
YX equals +2 squared minus -17 is approximately the answer of the origin
The first thing you do is go two space forward like start at the o and move two spaces forward you put a decimal at 9 like this 0.90 and that's how you do it