Answer: I'm not entirely sure but i think its the last one! How this helps!
Step-by-step explanation:
I followed the information on the graph and the one with a 7.2 circumference had a 22.66 cm diameter!
Answer:
- A-B=7x-3x+10-4x²-66+4
- 4x-52-4x²
hope it helps
stay safe healthy and happy.
Answer:
b
Step-by-step explanation:
The vertex is 
Explanation:
The equation is 
To find the vertex, we need the equation in the form of 
Dividing each term by 2 in the equation 

Now, completing the square by adding and subtracting 1, we get,

The first three terms can be written as
,
![f(x)=2[(x+1)^{2}+\frac{1}{2} ]](https://tex.z-dn.net/?f=f%28x%29%3D2%5B%28x%2B1%29%5E%7B2%7D%2B%5Cfrac%7B1%7D%7B2%7D%20%20%5D)
Multiplying 2 into the bracket, we get,

This equation is of the form 
Now, we shall find the vertex 
Thus,
and 
Thus, the vertex is 