Question

A certain freezing process requires that room temperature be lowered from 40. c. at the rate of 5. c every hour. what will be the room temperature 10 hours after the process begins​

Answer 1

Answer:

Step-by-step explanation:

Since there is a decrease in temperature by 4°C every hour, let's first find the total decrease in 10 hours:

or, 10 × 4 = 40°C.

This means that after 10 hours, there is going to be a decrease in temperature by 40°C.

Since 'decrease' refers to the subtraction operation, let's find the total decrease in temperature from the initial temperature of 40°C as:

or,  40 - 40 = 0°C.

Therefore, the room temperature 10 hours after the process begins is 0°C.

Answer 2

Answer:

-10°c

Step-by-step explanation:

Room temperature be lowered = 40°c

At the rate of = 5°c

(-5) × 10 = -50°c.

10 hours of freezing process=

40°c+(-50°c)= -10°c

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