Gloria F.

asked • 09/06/18

Temperature changed from -7°F at 6 a.m. to 7° at noon

Temperature changed from -7°F at 6am to 7°F at noon.  How much did the temperaturei crease

1 Expert Answer

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Arturo O. answered • 09/06/18

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7° - (-7°) = 14°
 
 
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Gloria F.

I know the answer is 14.  Why isn't it -7+7 
Or -7+ x = 7?
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09/06/18

Arturo O.

The way to calculate this is:
 
change in temperature = (final temperature) - (initial temperature)
 
[Note this is equivalent to the second equation that you wrote.]
 
final temperature = 7°
initial temperature = -7°
(final temperature) - (initial temperature) = 7° - (-7°) = 7° + 7° = 14°
 
If the result is positive, it is a temperature increase.  If the result is negative, it is a temperature decrease.
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09/06/18

Gloria F.

Thank you, be blessed. 
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09/06/18

Arturo O.

You are welcome. Gloria.
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09/06/18

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