Question

A certain freezing process requires that room temperature be lowered from 40°C at the rate of 3°C every hour. The room temperature after 10 hours the process begins ​

Answer 1

Answer:

The present room temperature = 40\degree C40°C

The room temperature decreasing every hour by rate of = 5\degree C5°C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)40°C + 10×(−5°C)

= 40\degree C-50\degree C\40°C−50°C

= -10\degree C−10°C

so, the room temperature after 10 hour = -10\degree C−10°C

Step-by-step explanation:

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Answer 2

Answer:

The present room temperature = 40\degree C40°C

The room temperature decreasing every hour by rate of = 5\degree C5°C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)40°C + 10×(−5°C)

= 40\degree C-50\degree C\40°C−50°C

= -10\degree C−10°C

so, the room temperature after 10 hour = -10\degree C−10°C

Step-by-step explanation:

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