15 is 30% of
50 Change the percentage to a decimal by dividing it over 100:
![\frac{30}{100} = 0.3](https://tex.z-dn.net/?f=%20%5Cfrac%7B30%7D%7B100%7D%20%3D%200.3%20)
Divide 15 over 0.3:
There is not a given equation nor ordered pair, so it is impossible to answer this question. I apologise.
Given:
Consider the expression is
![231^2-131^2](https://tex.z-dn.net/?f=231%5E2-131%5E2)
To find:
The value of given expression using a suitable identity.
Solution:
We have,
![231^2-131^2](https://tex.z-dn.net/?f=231%5E2-131%5E2)
Using the identity
, we get
![231^2-131^2=(231-131)(231+131)](https://tex.z-dn.net/?f=231%5E2-131%5E2%3D%28231-131%29%28231%2B131%29)
![231^2-131^2=(100)(362)](https://tex.z-dn.net/?f=231%5E2-131%5E2%3D%28100%29%28362%29)
![231^2-131^2=36200](https://tex.z-dn.net/?f=231%5E2-131%5E2%3D36200)
Therefore, the value of the given expression is
.