At night

On the night from Thursday to Friday, the temperature on the thermometer dropped to −7°C. On Friday at noon, the temperature rose by 13°C, and in the evening, the temperature dropped by 11°C.

On Friday evening, the thermometer showed the temperature:

Final Answer:

t2 =  -5 °C

Step-by-step explanation:

t1=7 °C  t2=t1+1311=(7)+1311=5°C



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