Answer:
B
Step-by-step explanation:
Basically, this question is asking the legs of the triangle shown in the graph. 
In this right triangle, there are 2 legs and one of them is 6400 meters. We were asked to find out the length of the other led. And we know the angle is 16.5 deg.
Using Tangent  to find out:
set the length of the other leg is x meters.
tan(16.5) = 6400/x 
x= 6400/tan(16.5)
x= 21606 m
 
        
                    
             
        
        
        
The answer is y-6 hope it helps
        
                    
             
        
        
        
The equation will be y=-5/9x+16/3
        
             
        
        
        
Answer:
V = 904.32cm3
Step-by-step explanation:
V = r*r*pi*h
   = 6*6*3.14*8 = 904.32cm3
 
        
             
        
        
        
Answer:
The car must have a speed of 25 kilometres per hour to stop after moving 7 metres. 
Step-by-step explanation:
Let be  , where
, where  is the stopping distance measured in metres and
 is the stopping distance measured in metres and  is the speed measured in kilometres per hour. The second-order polynomial is drawn with the help of a graphing tool and whose outcome is presented below as attachment.
 is the speed measured in kilometres per hour. The second-order polynomial is drawn with the help of a graphing tool and whose outcome is presented below as attachment.
The procedure to find the speed related to the given stopping distance is described below:
1) Construct the graph of  .
.
2) Add the function  .
.
3) The point of intersection between both curves contains the speed related to given stopping distance.
In consequence, the car must have a speed of 25 kilometres per hour to stop after moving 7 metres.