If half the sum of the bases is multiplied by the height, then that is the area of the trapezoid. 
I believe this is the correct wording. 
I am pretty sure these statements are created by taking the last part of the statement and pairing it with the “if” and the first part of the statement and pairing it with a “then” to make a complete statement. 
I hope this helps! :)
        
             
        
        
        
m = -1
Step-by-step explanation:
-16m = 7 + 9
-16m = 16
m = 16 ÷ -16
m = -1
 
        
             
        
        
        
Hey!
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-x = -1
This statement shows that y equals -1. Since it doesn't show a table or word problem then we already know that the constant of proportionality is -1. Or if you just have the expression just divide the number by 1. -x/1 = -1!
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Thus, -1 is the constant of proportionality!
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Hope This Helped! Good Luck!
 
        
             
        
        
        
$489.50+x=$756.80 
x=amount paz has.
756.80-489.50 = 267.3
so Paz has $267.30
        
                    
             
        
        
        
CommentI think you need brackets to clarify what you mean. I think it should be written as 
10b/(2b + 8) 
If that is the case the reciprocal is
(2b + 8)/10b You just turn everything up side down. There are technical ways of doing this, but the easiest way is just to do what I just did. 
Put the numerator in  the denominator,
Put the denominator in the numerator.
You could simplify this a bit.
2b/10b + 8/10b
which reduces further.
1/5 + 4/5b  
Just to make sure you understand where that b is, I will do this in 
Latex.
 Alternate answer
Alternate answerIf you do mean what your wrote then the reciprocal is 2b / 10b + 8 which is 1/5 + 8 = 8 + 0.2 = 8.2 
The 8 has nothing to do with the reciprocal under these conditions.
The answerI have given you all the choices I can think of without going into decimals. If you have choices, please list them under the comments.