Answer: 15.7 (1 decimal place)
Step-by-step explanation:
The formula for the circumference of a circle is d(diameter) x π(pi).
The diameter of this is 5 so you would do 5xπ=15.7 (1 decimal place)
 
        
             
        
        
        
Answer:
22%
Step-by-step explanation:
The percentage of tax can be found by calculating the percent change.
new - old / old
6084 - 7800 / 7800
= -0.22 or -22%
This means the price decreased by 22%, meaning you paid 22% in taxes. 
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Answer:
-1/2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Slope (m) =  18
/-17
=-1.0588235294118
Step-by-step explanation: