One winter morning in Canada, the temperature at 8:00 was 1.5°C. From 8:00 to 11:00, the temperature increased by 0.7°C. From 11:00 to 2:00, it dropped 2.6°C, and from 2:00 to 5:00, it decreased by 0.9°C.
What expression shows the temperature in °C at 5:00 p.m.?
To find the temperature at 5:00 p.m., we need to add up the changes in temperature from 8:00 a.m. to 5:00 p.m.
Given:
Temperature at 8:00 a.m.: 1.5°C
Change in temperature from 8:00 to 11:00: +0.7°C
Change in temperature from 11:00 to 2:00: -2.6°C
Change in temperature from 2:00 to 5:00: -0.9°C
To get the expression that shows the temperature at 5:00 p.m., we add these changes in temperature to the initial temperature at 8:00 a.m.:
Temperature at 5:00 p.m. = (1.5°C + 0.7°C) + (-2.6°C) + (-0.9°C)
Simplifying this equation, we get:
Temperature at 5:00 p.m. = 1.5°C + 0.7°C - 2.6°C - 0.9°C
Now, let's do the math to find the result:
Temperature at 5:00 p.m. = -1.3°C
Therefore, the expression that shows the temperature at 5:00 p.m. is -1.3°C.