Answer:
the size of interior decagon is 70
- If the equation is
:
![-8=x+\frac{11}{-2}\\-8=x-\frac{11}{2}\\-8+\frac{11}{2}=x-\frac{11}{2}+\frac{11}{2}\\-\frac{16}{2}+\frac{11}{2}=x\\x=-\frac{5}{2}=-2\frac{1}{2}](https://tex.z-dn.net/?f=-8%3Dx%2B%5Cfrac%7B11%7D%7B-2%7D%5C%5C-8%3Dx-%5Cfrac%7B11%7D%7B2%7D%5C%5C-8%2B%5Cfrac%7B11%7D%7B2%7D%3Dx-%5Cfrac%7B11%7D%7B2%7D%2B%5Cfrac%7B11%7D%7B2%7D%5C%5C-%5Cfrac%7B16%7D%7B2%7D%2B%5Cfrac%7B11%7D%7B2%7D%3Dx%5C%5Cx%3D-%5Cfrac%7B5%7D%7B2%7D%3D-2%5Cfrac%7B1%7D%7B2%7D)
- If the equation is
:
![-8=\frac{x+11}{-2}\\-8(-2)=\frac{x+11}{-2}(-2)\\16=\frac{-2(x+11)}{-2}\\16=x+11\\16-11=x+11-11\\x=5](https://tex.z-dn.net/?f=-8%3D%5Cfrac%7Bx%2B11%7D%7B-2%7D%5C%5C-8%28-2%29%3D%5Cfrac%7Bx%2B11%7D%7B-2%7D%28-2%29%5C%5C16%3D%5Cfrac%7B-2%28x%2B11%29%7D%7B-2%7D%5C%5C16%3Dx%2B11%5C%5C16-11%3Dx%2B11-11%5C%5Cx%3D5)
Hopefully the math was self-explanatory. If it is not, please feel free to ask for a step-by-step, in depth explanation, and I will edit my answer to accommodate.
Answer:
1 is 'given'
3 is 'vertical angle theorem'
dont know the other two sorry
Step-by-step explanation:
Answer:
-24
Step-by-step explanation:
First substitute
(6x8)/-2
Then solve
48/-2=-24
-24