Question

Piper spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -8.4°F. Between 9am and noon, the temperature increased by 2.6°F. Between noon and 3pm, the temperature rose 1.2°F.
Between 3pm and 6pm, the temperature went down 9.9°F. What was the

temperature at 6pm?

Answer 1

Step-by-step explanation:

starting point :

9 am -8.4°F

from 9 am to 12pm the temperature increased by 2.6°F.

12 pm -8.4 + 2.6 = -5.8°F

from 12pm to 3pm the temperature increased by 1.2°F.

3 pm -5.8 + 1.2 = -4.6°F

from 3pm to 6pm the temperature decreases by 9.9°F.

6 pm -4.6 - 9.9 = -14.5°F

we could have done the short approach.

the temperature changed overall by

2.6 + 1.2 - 9.9 = 3.8 - 9.9 = -6.1°F

and so, the final temperature was

-8.4 + -6.1 = -8.4 - 6.1 = -14.5°F

Answer 2

Considering the described changes, the temperature at 6 pm was of -14.5ºF.

How to find the temperature at 6 pm?

We look at the temperature for each interval, as follows:

• At 9 am, the temperature was -8.4°F.

• Between 9am and noon, the temperature increased by 2.6°F, hence, at noon, the temperature was of -8.4ºF + 2.6ºF = -5.8ºF.

• Between noon and 3pm, the temperature rose 1.2°F, hence, at 3 pm, the temperature was of -5.8ºF + 1.2ºF = -4.6ºF.

Between 3pm and 6pm, the temperature went down 9.9°F, hence at 6 pm, the temperature was given as follows:

-4.6ºF - 9.9ºF = -14.5ºF.

The temperature at 6 pm was of -14.5ºF.

A similar problem, involving change of temperatures, is given at brainly.com/question/3066572

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