Answer:
24, 14
Step-by-step explanation:
x + y = 38
x = 10 + y
You can substitute (10+y) into the top equation where the x is.
10 + y + y = 38
10 + 2y = 38
2y = 28
y = 14
Now plug 14 in for y in either equation to get x
x = 10 + 14
x = 24
 
        
             
        
        
        
12% of 130 is 15.6 hope it helps!
        
                    
             
        
        
        
Answer:
You need to use the graph's equation and find the answer of y when x is 0 as this will give y when it is on the y axis. 
To do this, substitute in 0 were x is in the equation and you will find the y intercept
 
        
             
        
        
        
Answer:
25x10^18/4   or    6.25x10^18
Step-by-step explanation:
2.5x10^33x5x10^-15/2
12.5x10^18/2
 
        
             
        
        
        
Answer:
 ? = 109 degrees 
Step-by-step explanation:
45 + 75 + _ = 180  ( look for vertical angles)
45 + 75 + 60 = 180 
 60 +79 + _ = 180 (look for a straight line that forms 180 degrees)
60 + 79 + 41 = 180 
68 + 41 + _ = 180 (look for a triangle that adds up to 180)
68 + 41 + 71 =180
180 - 71 = 109 (look for a linear pair)