Answer:
temperature on the 5th days was -3 degree Celsius
Step-by-step explanation:
Mean is the average of the numbers
As per the statement:
The mean temperature for the first 4 days in January was 7°C.
Sum of the first 4 days temperature = [tex]4 \cdot 7 = 28^{\circ} C[/tex]
It is also given that:
the mean temperature for the first 5 days in January was 5°C.
then;
Sum of the first 5 days temperature = [tex]5 \cdot 5 = 25^{\circ} C[/tex]
We have to find the temperature on the 5th days.
[tex]\text{Temperature on 5th days}=\text{Sum of first 5 days temperature}-\text{Sum of first 4 days temperature}[/tex]
Substitute the given values we have;
[tex]\text{Temperature on 5th days} = 25-28 =- 3^{\circ} C[/tex]
Therefore, the temperature on the 5th days was -3 degree Celsius
