So you will have to find the difference between each number so 6--2=8 
and 8--2=10. So then I'm guessing you have to round 8 to 10. Sorry if this isn't all correct.
        
             
        
        
        
Answer:
<em><u>z = -3</u></em>
Step-by-step explanation:
<u>Step 1: Simplify both sides of the equation.
</u>
z+7=−z+1
<u>Step 2: Add z to both sides.
</u>
z+7+z=−z+1+z
2z+7=1
<u>Step 3: Subtract 7 from both sides.
</u>
2z+7−7=1−7
2z=−6
<u>Step 4: Divide both sides by 2.
</u>
<u>2z</u>   =  <u>−6
</u>
 2      2
z=−3
 
        
                    
             
        
        
        
Answer:
The correct answer is "50%".
Step-by-step explanation:
The given values are:
Gravel,
= 
Water,
= 
Cement,
= 1
Sand,
= 2
Now,
The total mixture will be: 
= 
By substituting the values, we get
= 
= 
= 
hence,
The percentage of sand will be:
= 
= 
=  %
%
 
        
             
        
        
        
Answer:
cx
Step-by-step explanation:
 
        
             
        
        
        
Answer:
It is A
Step-by-step explanation:
Cuz it rotates Over the axis and reflect over it