Answer:
-4°C
Key:
( | | ) = these in between numbers is the absolute value. <em>EXAMPLE: </em>|-8| = 8
Step-by-step explanation:
If it was -9°C and it <em>INCREASED </em>by 5°C, you need to <em>ADD.</em>
-9°C + 5°C
<em>*Because -9°C is a NEGATIVE NUMBER and is on the LEFT side of the number line, unlike 5°C, you need to count 5 units to the RIGHT of -9°C (Basically subtract the absolute values of each number (-9 = |9|) (5 = |5|) and make it either positive or negative, depending on which absolute value is the greatest (|9|).*</em>
-9°C + 5°C <u><em>OR </em></u> |9| - |5|
|9°C| - |5°C| = |4°C|<em> </em>= -4°C
(because the greatest absolute value, |9|, is negative, the answer is too.)
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HOPE THIS HELPS :D</em></u></h2>
