Answer
The actors' houses in real life will be 4 kilometers apart.
Step-by-step explanation
If the two Hollywood actors' houses are 8 centimeters apart, and the map uses a scale of 2 centimeters = 1 kilometer, then the actors' houses in real life will be
![\frac{8\text{ centimeters }*1\text{ kilometer}}{2\text{ centimeters}}=4\text{ kilometers}](https://img.qammunity.org/2023/formulas/mathematics/college/finckrnm2f2pmri1p7bmu4z6ecieg16edn.png)