Answer:
20
Step-by-step explanation:
Work backwards. If -2 x 2= -4 then something plus negative four will equal 16, which is 20.
 
        
             
        
        
        
Answer:
Hulian's age is 7. 
Thomas's age is 22.
Step-by-step explanation:
Let Hulian = h
Let Thomas = t
Set the system of equation: 
h = t - 15
h + t = 29
Plug in t - 15 for h in the second equation: 
(t - 15) + t = 29
Simplify. Combine like terms: 
2t - 15 = 29
Isolate the variable, t. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides: 
2t - 15 (+15) = 29 (+15)
2t = 44
Divide 2 from both sides: 
(2t)/2 = (44)2
t = 44/2
t = 22
Plug in 22 for t in one of the equations: 
h = t - 15
h = 22 - 15
h = 7
Hulian's age is 7. 
Thomas's age is 22.
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The difference between each number in the dollars fund is 25
209 - 184 = 25
184 - 159 = 25
so....in the ? space......134 - 25 = 109 <==
        
             
        
        
        
Answer:
You will get 13 groups.
Step-by-step explanation:
324 / 24 = 13.5  So there are 13 groups with 5 left over. Hope this helps.
 
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation: