Convert \( 99^{\circ} \mathrm{F} \) to degrees Celsius. If necessary, round your answer to the nearest tenth of a degree. Here are the formulas. \[ C=\frac{5}{9}(F-32) \] \( F=\frac{9}{5} C+32 \) \( 99^{\circ} \mathrm{F}=[]^{\circ} \mathrm{C} \)

1. Use the formula for converting Fahrenheit to Celsius: \[ C = \frac{5}{9}(F - 32) \] 2. Substitute \( F = 99 \) into the formula: \[ C = \frac{5}{9}(99 - 32) \] 3. Calculate the difference inside the parentheses: \[ 99 - 32 = 67 \] 4. Now, substitute back into the formula: \[ C = \frac{5}{9} \times 67 = \frac{335}{9} \] 5. Divide \( 335 \) by \( 9 \) to get the decimal: \[ \frac{335}{9} \approx 37.2222 \] 6. Round the result to the nearest tenth: \[ 37.2^\circ \text{C} \]