Mathematics test by mhyko

1. What is the solution to the quadratic equation x² - 5x + 6 = 0?

2. In a dataset, the mean is 50 and the standard deviation is 5. What is the z-score of a value 60?

3. What are the roots of the equation 2x² + 4x + 2 = 0?

4. A survey shows that 70% of students prefer online classes. If 100 students are surveyed, how many prefer online classes?

5. If the quadratic function is given by f(x) = x²- 4x + 3, what is its vertex?

6. What is the median of the dataset: 3, 7, 5, 9, 1?

7. Which of these equations represents a parabola that opens upwards?

8. The variance of a dataset is 16. What is the standard deviation?

9. If a quadratic equation has roots at x = 3 and x = -2, what is its factored form?

10. What is the 75th percentile of the dataset: 12, 15, 20, 22, 30?