Question

3. A certain freezing process requires that the room temperature be lowered from 45 °C at the
rate of 4°C every hour. What will be the room temperature 10 hours after the process
begins​

Answer 1

Step-by-step explanation:

Current temperature of the room = 45℃

Rate of temperature decrease. = 4℃

Temperature after 10 hours. = 10 × 4

= 40

Temperature after 10 hours. = 45℃ - 40℃

= 5℃

Hope this helps you :)

Answer 2

Step-by-step explanation:

Initial Temperature = 40° C

Rate of change in temperature = 4°C/hour

Time = 10 hours

So, in 10 hours the temperature would be decreased by 10*4 = 40°C.

So, Final Temperature = 40 - 40 = 0°C

Answer:-

0°C will be the room temperature 10 hours after the process begins.

I hope it's help you...☺