Answer: 
Step-by-step explanation:
Given
The tower is at a height of 
the angle of depression is 
Suppose the surfer is x ft away from the base of the tower
Therefore, the surfer is at a distance of 19.31 ft from the base of the tower.
I believe its B. Stratified because the owner had to speak to ten individuals, meaning he divided it into smaller groups.
The obvious answer is because propane is a gas at room temperature, while 2-propanol is a liquid at room temperature.
That happens because the intermolecular forces that exist between 2-propanol, or isopropyl alcohol, molecules are stronger than those that exist between propane molecules.
There are an infinite amount of equations that pass through a single point. You must provide the slope or y-intercept to get a single equation.
Hope that clarifies.
