To convert the decimal number –9.5 into a mixed number, follow these steps:

  1. Identify the whole number part: The whole number part of –9.5 is -9.
  2. Identify the decimal part: The decimal part is 0.5.
  3. Convert the decimal to a fraction: The decimal 0.5 can be written as the fraction 1/2 because 0.5 is equivalent to 5/10, which simplifies to 1/2.
  4. Combine the parts: Now combine the whole number part and the fraction part to form the mixed number: -9 1/2.

Therefore, –9.5 as a mixed number is -9 1/2.