Answer:
about 10.8
Step-by-step explanation:
6^2*9^2=117
square root of 117=10.8
Answer:
x=6
Step-by-step explanation:
Mean is another word for average. It is found by adding up all of the values, and dividing that number by the amount of values you added together.
You have 5 values that get a mean or, average, of 7.4
1) We can write this as the following:
(11+12+5+3+x)/5=7.4
2) To solve, multiply both sides by 5:
11+12+5+3+x=37
3) Now combine all of the numbers on the left:
31+x=37
4) Now subtract 31 from both sides:
x=6
The function that describes the graph above looks like this:
![x^2-2x=0](https://tex.z-dn.net/?f=x%5E2-2x%3D0)
The rate of change at a particular moment is the same as the value of the derivative<span> at a particular </span>point. So, let's find a derivative of your function:
![f'(x)=(x^2-2x)'=2x-2](https://tex.z-dn.net/?f=f%27%28x%29%3D%28x%5E2-2x%29%27%3D2x-2)
Now, let's replace
![x](https://tex.z-dn.net/?f=x)
variable with given value
![(-1)](https://tex.z-dn.net/?f=%28-1%29)
:
![f'(-1)=2*(-1)-2=-4](https://tex.z-dn.net/?f=f%27%28-1%29%3D2%2A%28-1%29-2%3D-4)
Solution:t<span>he instantaneous rate of change at
![x = -1](https://tex.z-dn.net/?f=x%20%3D%20-1)
</span> is
-4.
I believe the answer is 5y :)