Here's how to convert -11 degrees Fahrenheit to Kelvin:

1. Convert Fahrenheit to Celsius:

* Subtract 32 from the Fahrenheit temperature: -11 °F - 32 = -43 °F

* Divide the result by 9 and multiply by 5: (-43 °F / 9) * 5 = -23.89 °C (approximately)

2. Convert Celsius to Kelvin:

* Add 273.15 to the Celsius temperature: -23.89 °C + 273.15 = 249.26 K (approximately)

Therefore, -11 degrees Fahrenheit is approximately 249.26 Kelvin.