Answer:
Rita had r apps as the start of the day
After she deleted 5 apps, 
equation for apps of cora = (r-5)
Equation for apps of Rita = 2 (r-5)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
7.6 in
Step-by-step explanation:
c = 2πr       Divide each side by 2π
r = C/2π     Insert values
r = 48/(2×3.14)
r = 48/6.28
r = 7.6 in
 
        
             
        
        
        
Answer:
Answer A
Step-by-step explanation:
slope= (c+d-(c-d))/(c-d-(c+d))=2d/(-2d)=-1
 
        
                    
             
        
        
        
Girl I’m sorry but do u mean question ? ♀️ and its the third one I think
        
             
        
        
        
Ratio of loss of tinme of Jackies warch to the gain of time of Adam's watch is 2 : 1
Let the number of hour ellapsed at the time they are twelve minutes apart be x, then 
2x + x = 12
⇒ 3x = 12
⇒ x = 12 / 3 = 4
Thus, after 4 hours Jackie's watch has lost 8 minutes and Adam's watch has gained 4 minutes.
Therefore, the real time at the time they arrive at the airport is 10:00 am.