Answer:
8/21
Step-by-step explanation:
-1/3 + 5/7=1×7 =-7/21 +15/21
 - × -
 3. 7
-7/21 + 15/21= -7+15 = 8/21
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 21
 
        
             
        
        
        
We are given equation c=50p.
c is the total cost and p is the number of people.
Let us take number of people by groups of 10, 20, 30,40 people.
Note: We can take any positive integer for number of people in a group.
Now, we need to plug p=10, 20, 30,40 one by one in given function c=50p to find the costs c.
Plugging p=10, we get 
c= 50*10 = 500.
Plugging p=20, we get 
c= 50*20 = 1000.
Plugging p=30, we get 
c= 50*30 = 1500.
Plugging p=40, we get 
c= 50*40 = 2000.
So, we can create a table as.
Number of people (p)           Total cost (c)
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          10                                      500
          20                                     1000
          30                                     1500
          40                                     2000
 
        
             
        
        
        
The absolute value 
 returns the "positive version" of a number.
In other words, if the number is positive, it remains positive; if the number is negative, it changes sign.
So, if we want 
, we want the "positive version" of x to be 9.
This can happen in two ways: if x is already 9, then its absolute value is still nine. If instead x=-9, its positive value will be 9 again.
In formula, we have

because

 
        
             
        
        
        
Answer:
0∙2=0
Step-by-step explanation:
Zero Property of multiplication is as follows :
The product of a number and 0 is equal to 0.
In option (c), 0 is multiplied by 2 and as a result, we get 0 as the answer.
It means,
0∙2=0
Hence, option (c) i.e. 0∙2=0 shows the Zero Property of Multiplication.