To determine the percent of the diagram that one section represents in a circle divided into 10 equal parts, you can start by recognizing that each section represents \( \frac{1}{10} \) of the whole circle.
To convert this fraction to a percentage, you can use the following equation:
\[ \text{Percent} = \left(\frac{\text{part}}{\text{whole}}\right) \times 100 \]
In this case, the part is \(1\) (one section) and the whole is \(10\) (the total number of sections), so:
\[ \text{Percent} = \left(\frac{1}{10}\right) \times 100 = 10% \]
Thus, the correct representation from your options is:
\[ \frac{1}{10} = \frac{10}{100} = 10% \]
So, the equation you would use to determine the percent that one section represents is: \[ \frac{1}{10} = \frac{10}{100} = 10% \]
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