Respuesta :
Answer:6.25
Step-by-step explanation:
Mean temperature for first 7 days is
Sum of temperatures for each day ÷ number of days
7 = sum of temperatures for each day/7
Let x =Sum of temperatures for 7 days=x/7
x=49
For 8 days, total sum of temperatures is x +1 = 49+1 = 50
Mean temperature for first 8 days is
Sum of temperatures for each day ÷ number of days
= 50/8= 6.25
Answer: Mean temperature for the first 8 days in January is 6.25°C.
Step-by-step explanation:
Since we have given that
Mean temperature for the first 7 days in January = 7° C
Temperature on 8th day = 1°C
As we know that
Average for first 7 days is given by
[tex]\dfrac{\text{Sum of temperature for the first 7 days}}{7}\\\\7=\dfrac{\text{Sum of temperature for the first 7 days}}{7}\\\\\text{Sum of temperature for the first 7 days }=7\times 7=49^\circ C[/tex]
Now, Average temperature for the first 8 days in January would be
[tex]=\dfrac{49+1}{8}\\\\=\dfrac{50}{8}\\\\=6.25^\circ C[/tex]
Hence, mean temperature for the first 8 days in January is 6.25°C.
