Answer:
Angles 2 and 3 are supplementary to each other
Step-by-step explanation:
A supplementary angle is 2 angles that when you add the sum is 180.
 
        
             
        
        
        
Answer:
k = 5
Step-by-step explanation:
Given
 +
 +  = 3 ( multiply through by 3 to clear the fractions )
 = 3 ( multiply through by 3 to clear the fractions )
k + 1 = 6 ( subtract 1 from both sides )
k = 5
 
        
                    
             
        
        
        
Yes it is a geometric sequence and the common ratio is 2/3
        
                    
             
        
        
        
It is really easy it is 6
        
                    
             
        
        
        
A and B I believe. 
It would be A because jump height can be found out by the amount of force you exert to get you into the air minus the gravitational force.
It would also be B because the amount of time you run on the track can be found out by dividing the track length by your speed on the track.
Hope this helps!