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Kpthegoat
08.04.2020 •
Mathematics
The temperature at 09:00 was -3°C. Over the next 6 h, the temperature dropped 2°C, rose 3°C, rose 2°C, dropped 1°C, rose 4°C, and dropped 2°C. What was the temperature at 15:00?
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Ответ:
1°C
Step-by-step explanation:
The inicial temperature at 09:00 was -3°C.
The changes in temperature in each of the six hours were:
first hour: -2°C
secondhour: +3°C
third hour: +2°C
fourth hour: -1°C
fifth hour: +4°C
sixth hour: -2°C
So, the temperature at 15:00 is the sum of the inicial temperature and all of these changes:
Temperature at 15:00 = -3°C -2°C +3°C +2°C -1°C +4°C -2°C = 1°C
Ответ:
n=8, n=-2
Step-by-step explanation:
|n-3| = 5
n-3 =5 and n - 3 = -5
n-3=5 (add 3 to both sides) n-3=-5 (add 3 to both sides)
n= 8 n=-2