Answer:
![p(a\ or\ b) = 0.65](https://tex.z-dn.net/?f=p%28a%5C%20or%5C%20b%29%20%20%3D%200.65)
Step-by-step explanation:
Given
![p(a) = 0.60](https://tex.z-dn.net/?f=p%28a%29%20%3D%200.60)
![p(b) = 0.20](https://tex.z-dn.net/?f=p%28b%29%20%3D%200.20)
![p(a\ and\ b) = 0.15](https://tex.z-dn.net/?f=p%28a%5C%20and%5C%20b%29%20%3D%200.15)
Required
![p(a\ or\ b)](https://tex.z-dn.net/?f=p%28a%5C%20or%5C%20b%29)
The relationship between the given parameters and the required parameters is as follows;
![p(a\ and\ b) = p(a) + p(b) - p(a\ or\ b)](https://tex.z-dn.net/?f=p%28a%5C%20and%5C%20b%29%20%3D%20p%28a%29%20%2B%20p%28b%29%20-%20p%28a%5C%20or%5C%20b%29)
Substitute values for the known parameters
![0.15 = 0.60 + 0.20 - p(a\ or\ b)](https://tex.z-dn.net/?f=0.15%20%3D%200.60%20%2B%200.20%20-%20p%28a%5C%20or%5C%20b%29)
![0.15 = 0.80 - p(a\ or\ b)](https://tex.z-dn.net/?f=0.15%20%3D%200.80%20-%20p%28a%5C%20or%5C%20b%29)
Collect Like Terms
![p(a\ or\ b) = 0.80 - 0.15](https://tex.z-dn.net/?f=p%28a%5C%20or%5C%20b%29%20%20%3D%200.80%20-%200.15)
![p(a\ or\ b) = 0.65](https://tex.z-dn.net/?f=p%28a%5C%20or%5C%20b%29%20%20%3D%200.65)
Hence;
![p(a\ or\ b) = 0.65](https://tex.z-dn.net/?f=p%28a%5C%20or%5C%20b%29%20%20%3D%200.65)
What you want to do is get the variable x on the left side by itself (just like you would if this were an equation). Be sure to perform the same operations on both sides of the inequality until x is all by itself on the left side.
4/15 !! hope it helps loll
Answer:
69
Step-by-step explanation:
69 squared is 4761