Perimeter is 
2 • width+ 2•length=
2• (4x-4)+2•(2x+5)=
Distribute multiplication in parentheses 
8x-8+4x+10=
Combine like terms 
12x+2
        
             
        
        
        
(1, -6) and (-5, 2)
Distance between 1 and -5 = 6
Distance between -6 and 2 = 8
6²+8²=x² (PYTHAGOREAN THEOREM)
36+64=x²
x² = 100
x = 10
Note: Not -10 because <em>distance cannot be negative.</em>
        
             
        
        
        
YZ = 16. The triangles are congruent. This would be AAS so YZ = 16 because of CPCTC.
        
             
        
        
        
Answer:
The GDP gap is 9 % when there is 4.5 % unemployment.
Step-by-step explanation:
The statement shows a reverse relationship, where an increase in unemployment is following by decrease in potential GDP and can be translated into the following rate:

The GDP gap at a given increase in unemployment can be estimated by the following expression:


Where:
 - GDP gap-unemployment increase rate, dimensionless.
 - GDP gap-unemployment increase rate, dimensionless. 
 - Increase in unemployment rate, measured in percentage.
 - Increase in unemployment rate, measured in percentage.
 - GDP gap, measured in percentage.
 - GDP gap, measured in percentage.
If  and
 and  , the GDP gap is:
, the GDP gap is:


The GDP gap is 9 % when there is 4.5 % unemployment.