1:5
2 feet long. 
3 and 15 simplified equals 1 and 5. So if the building is 10 who's is double 5, then the person is 2.
        
             
        
        
        
Answer:
See explanation
Step-by-step explanation:
In the figure below, segment CD is parallel to segment EF, DE is a transversal, then angles DIH and HGI are congruent as alternate interior angles when two parallel lines are cut by a transversal.
Consider triangles DIH and EGH. In these triangles,
 as alternate interior angles; as alternate interior angles;
 as vertical angles; as vertical angles;
 because point H bisects segment DE (given). because point H bisects segment DE (given).
Thus,
 by AAS postulate
 by AAS postulate
 
        
             
        
        
        
Answer: c
Step-by-step explanation:
If the population triples every three hours, you would multiply three by the number of one hour to the power of three, making three hours. This function would triple it every three hours.