Answer:
5 or 6 I hope i helped YOU!!!!!
Step-by-step explanation:
Answer:
Send me a clarity question.
We know that this parabola intecepts the x-axis in 6 and -3. This means that is a vertical axis parabola. But also we know that our parabola passes through (1,10). Graphing these we conclude that is a concave down parabola
The general formula for this is:
![y=ax^{2}+bx+c](https://tex.z-dn.net/?f=y%3Dax%5E%7B2%7D%2Bbx%2Bc)
To solve this we need to form a 3 equations system with our three points
![0=a6^{2}+b6+c\\0=a(-3)^{2}+b(-3)+c\\10=a1^{2}+b1+c](https://tex.z-dn.net/?f=0%3Da6%5E%7B2%7D%2Bb6%2Bc%5C%5C0%3Da%28-3%29%5E%7B2%7D%2Bb%28-3%29%2Bc%5C%5C10%3Da1%5E%7B2%7D%2Bb1%2Bc)
We can solve for c in the first one
![c=-a36-b6](https://tex.z-dn.net/?f=c%3D-a36-b6)
and replace in the second one and solve for b:
![0=a9-b3-a36-b6\\0=-a27-b9\\b9=-a27\\b=-a(27/9)\\b=-3a](https://tex.z-dn.net/?f=0%3Da9-b3-a36-b6%5C%5C0%3D-a27-b9%5C%5Cb9%3D-a27%5C%5Cb%3D-a%2827%2F9%29%5C%5Cb%3D-3a)
And replace c and b in the third equation:
![10=a-a3-a36+a18](https://tex.z-dn.net/?f=10%3Da-a3-a36%2Ba18)
Solve for a:
![10=-a20\\a=-0.5](https://tex.z-dn.net/?f=10%3D-a20%5C%5Ca%3D-0.5)
so b and c:
![b=1.5](https://tex.z-dn.net/?f=b%3D1.5)
![c=9](https://tex.z-dn.net/?f=c%3D9)
So:
![y=-0.5x^{2}+1.5x+9](https://tex.z-dn.net/?f=y%3D-0.5x%5E%7B2%7D%2B1.5x%2B9)
I am a little confused about the question you are trying to ask. It is an isosceles triangle because it has two sides of equal length.
The other angle would be...
180-2(55)=70 degrees