The temperature at 6:00 pm was 33°f.over the course of the day, the temperature decreased 5.5°F per hour. What was the temperature at midnight?

I assume you mean over the course of the evening . . .

5.5 * 6 = 33 degrees

33 - 33 = 0

To find the temperature at midnight, we need to determine the number of hours between 6:00 pm and midnight and then calculate the decrease in temperature during that time.

There are 6 hours between 6:00 pm and midnight (12:00 am).

To calculate the decrease in temperature, we multiply the rate of decrease (5.5°F) by the number of hours (6).

Decrease in temperature = 5.5°F/hour × 6 hours = 33°F

Since the temperature decreased by 33°F over the course of the day, we subtract this decrease from the temperature at 6:00 pm.

Temperature at midnight = Temperature at 6:00 pm - Decrease in temperature
Temperature at midnight = 33°F - 33°F = 0°F

Therefore, the temperature at midnight is 0°F.