The arcs have to intersect to give a point which will connect to the vertex of the angle that you are bisecting.
75%
explanation: it can’t be above 100% because that would be over 40.
This can be solved using a system of equations.
![\left \{ {{x+y=80} \atop {x-4y=10} \right. ](https://tex.z-dn.net/?f=%20%5Cleft%20%5C%7B%20%7B%7Bx%2By%3D80%7D%20%5Catop%20%7Bx-4y%3D10%7D%20%5Cright.%20%0A)
Subtract y from both sides.
![x=80-y](https://tex.z-dn.net/?f=x%3D80-y)
Substitute:
![80-y-4y=80-5y=10](https://tex.z-dn.net/?f=80-y-4y%3D80-5y%3D10)
Subtract 80 from both sides:
![5y=70](https://tex.z-dn.net/?f=5y%3D70)
Divide both sides by 5:
![y= \frac{70}{5} =14](https://tex.z-dn.net/?f=y%3D%20%5Cfrac%7B70%7D%7B5%7D%20%3D14)
Substitute.
8, 16,24,32,40,48,56,64,72,80,88,96,104,112,120,128,136,144,152,160
Answer:
±8√2
Step-by-step explanation: