MATH 7A

Add And Subtract Rational Numbers Unit Test.

Solve the following word problem. The air temperature at 9 a.m. is -5.8 degrees Celsius. The air temperature at noon is -1.6 degrees Celsius. What is the change in the temperature during these three hours? Write and solve an equation to show your answer. Then explain what your answer means. (4 points)

1 answer

To find the change in temperature during these three hours, we need to subtract the initial temperature from the final temperature.

Let's represent the initial temperature as -5.8 degrees Celsius and the final temperature as -1.6 degrees Celsius.

The equation to find the change in temperature is:

Change in temperature = Final temperature - Initial temperature

Change in temperature = -1.6 - (-5.8)

Change in temperature = -1.6 + 5.8

Change in temperature = 4.2

Therefore, the change in temperature during these three hours is 4.2 degrees Celsius.

This means that the temperature increased by 4.2 degrees Celsius from 9 a.m. to noon.
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