A function is defined by \(h : x \to 2 - \frac{1}{2x - 3}, x \neq \frac{3}{2}\). Find \(h^{-1}(\frac{1}{2})\).
The radius of a sphere is increasing at a rate \(3cm s^{-1}\). Find the rate of increase in the surface area, when the radius is 2cm.
Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
Frequency | 6 | 8 | 14 | 10 | 12 |
What is the class mark of the median class?
Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
Frequency | 6 | 8 | 14 | 10 | 12 |
In which group is the upper quartile?
Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
Frequency | 6 | 8 | 14 | 10 | 12 |
Find the mean of the distribution.