Answer:
(x. y)=  (4,-6)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Theortical probability
A = 1/4
B = 1/3
C = 5/12
Experamental probability
A = 18/60 = 3/10
B = 20/60 = 1/3
C =  22/60 = 11/30
 
        
             
        
        
        
2(x+4)=2x+8=-7-3x switch 3x+2x=-7-8=-15=5x so x=-15/5=-3
        
             
        
        
        
Answer:
Donna swims 8 km each week.
Step-by-step explanation:
To be able to find the answer, you have to consider that 1 km is equal to 1000 meters and with this, you can use  rule of three to find the kilometers in 8000 meters:
1 km  →  1000 meters
   x    ←   8000 meters
x=(1*8000)/1000=8 km
According to this, the answer is that Donna swims 8 km each week.
 
        
             
        
        
        
Answer:
Alice saved 218 and mindy saved 218+54
Step-by-step explanation: