80X3 PLUS 2x3 that is awnser
First,
We are dealing with parabola since the equation has a form of,
![y=ax^2+bx+c](https://tex.z-dn.net/?f=y%3Dax%5E2%2Bbx%2Bc)
Here the vertex of an up - down facing parabola has a form of,
![x_v=-\dfrac{b}{2a}](https://tex.z-dn.net/?f=x_v%3D-%5Cdfrac%7Bb%7D%7B2a%7D)
The parameters we have are,
![a=-5,b=-10, c=6](https://tex.z-dn.net/?f=a%3D-5%2Cb%3D-10%2C%20c%3D6)
Plug them in vertex formula,
![x_v=-\dfrac{-10}{2(-5)}=-1](https://tex.z-dn.net/?f=x_v%3D-%5Cdfrac%7B-10%7D%7B2%28-5%29%7D%3D-1)
Plug in the
into the equation,
![y_v=-5(-1)^2-10(-1)+6=11](https://tex.z-dn.net/?f=y_v%3D-5%28-1%29%5E2-10%28-1%29%2B6%3D11)
We now got a point parabola vertex with coordinates,
![(x_v, y_v)\Longrightarrow(-1,11)](https://tex.z-dn.net/?f=%28x_v%2C%20y_v%29%5CLongrightarrow%28-1%2C11%29)
From here we emerge two rules:
- If
then vertex is max value - If
then vertex is min value
So our vertex is minimum value since,
![a=-5\Longleftrightarrow a](https://tex.z-dn.net/?f=a%3D-5%5CLongleftrightarrow%20a%3C0)
Hope this helps.
r3t40
Answer: 22
Step-by-step explanation:
11 - 6 = 5
4 x 5 = 20
20 + 2 = 22
' pls can i have brainliest? i need it for my goal'
Sum of interior angles= 180
3:18-1:33=188 so I think that’s ur answer