How to calculate the mean for first term 709 I have 9 subject I want to know the percentage

The mean is the total score divided by the number of subjects.

$$\text{Mean} = \frac{\text{Total score}}{\text{Number of subjects}}$$ $$\text{Mean} = \frac{709}{9}$$ $$\text{Mean} \approx 78.78$$

Assuming each subject is graded out of 100, the maximum possible total score for 9 subjects would be $9 \times 100 = 900$.

$$\text{Percentage} = \frac{\text{Total score}}{\text{Maximum possible total score}} \times 100\%$$ $$\text{Percentage} = \frac{709}{900} \times 100\%$$ $$\text{Percentage} \approx 0.78777 \times 100\%$$ $$\text{Percentage} \approx 78.78\%$$

The mean score for the first term is approximately $\boxed{\text{78.78}}$ and the percentage is approximately $\boxed{\text{78.78\%}}$.