Question

question 20 of 25
what is 0.09% written as a decimal?

a. 0.0009
b. 0.9
c. 0.009
d. 0.09

Explanation:

Step1: Recall percentage to decimal conversion

To convert a percentage to a decimal, we divide the percentage value by 100. This is because "percent" means "per hundred", so \( x\%=\frac{x}{100} \).

Step2: Apply the conversion to 0.09%

For \( 0.09\% \), we perform the division: \( 0.09\div100 \). When dividing a number by 100, we move the decimal point two places to the left.
Starting with 0.09, moving the decimal point two places to the left gives \( 0.0009 \).

Answer:

A. 0.0009