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The mean temperature for the first 7 days in January was 9 °C. The temperature on the 8th day was 8 °C. What is the mean temperature for the first 8 days in January

User Barak
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2 Answers

2 votes

Answer:

8.875 degrees Celsius

Explanation:

User Piyush Chauhan
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8.4k points
2 votes

Answer:


8.875\°C

Explanation:

Let

x ----> the mean temperature for the first 8 days in January

we know that

The mean temperature for the first 7 days in January multiplied by 7 is equal to the sum of the temperatures for the first 7 days

9(7)=63°C

so

The sum of the temperatures for the first 7 days plus the temperature on the 8th day, all divided by 8 is equal to the mean temperature for the first 8 days in January


x=(63+8)/(8)=8.875\°C

User Guichi
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