Answer:
20 divided by 48 is 0.416666666666666667
Step-by-step explanation:
use a calculator
7.54 is the square root of 57.
It is called effective interest rate.
For example, you invest in a bond wich pays 5% annual interest rate and it compounds semiannually.
The first semester you win 2.5% over the capital invested and in the second semester you win 2.5% over the capital plus the interested earned in the first semester. Then the effecive interest rate is higher than 5%.