2:5
4:10
8:20
16:40
Hope that helps:)

To convert into decimal, move the decimal to the left by 6 positions.
It will be 0.00000563
Answer is A.
We know that the percentage amount of any number can be found by first converting the the given percentage to a fraction and then multiplying it by the given number. Thus, in our case, the exact value, that is 48% of 1165 can be calculated as follows:
We know that 
Therefore, 48% of 1165 can be re-written as: 
This can be calculated as [tex]0.48\times 1165=559.2[/tex
Therefore The exact value that is 48% of 1165 is 559.2