Question

the temperature at 12 noon was 15 degree Celsius above zero. if it decreases at the rate of 3 degree Celsius per hour until midnight. at what time would the temperature 9 degree Celsius below zero​

Answer 1

Answer:

8:00 pm

Step-by-step explanation

do -3 for per hour and when -9 comes .

subtract from 12 how many times you did -3.

please mark me as brainliest

Answer 2

Answer:

8:00pm

Step-by-step explanation:

As it decreases 3 degrees celsius

At 1:00pm = 12°C

   3:00pm = 6°C

   5:00pm = 0°C

   6:00pm = -3°c

   8:00pm = -9°c