Answer:
1/5 pound
I just did this on paper and got 1/5 pound (23/40)
 
        
             
        
        
        
Answer:

Step-by-step explanation:
 
        
             
        
        
        
Answer:
The length is 72
Step-by-step explanation:
length x width = area
9 x length = 648
length = 72
 
        
             
        
        
        
Answer:
k = 9/4
Step-by-step explanation:
To find k, use the equation 
y = kx
Pick a point
72 = k *32
Divide each side by 32
72/32 = k
9/4 = k
 
        
                    
             
        
        
        
Answer with Step-by-step explanation:
We are given a variable b
We have to state the additive property of zero using the variable b.
Additive property of zero: It states that when any number b is added to zero then we get  sum is equal to number itself.
Mathematical representation:

Suppose, a number  b=9
Then, 9+0=9 
0+9=9
This property is called additive property of zero because when 9 is added to 0 then we get sum equals to 9.