Step-by-step explanation:
Let the length be x
7% of x = 200ft
7/100 × x = 200
7x/100 = 200
7x = 200 × 100
7x = 20000
x = 20000/7
x = 2,857.14
 
        
                    
             
        
        
        
Answer:
Mean = 200
Variation = .83
SD = .17
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Answer:
The answer is D.
Step-by-step explanation:
She forgot to find the square root of 7225.
 
        
                    
             
        
        
        
Let A = 0.0009, it is equivalent to A = 9^-4 =  (9^-2)^2
so sqrt A =sqrt (9^-2)^2 = (9^-2)  
<span>he real square roots of 0.0009 is 0.09</span>
        
             
        
        
        
Answer:
Choice a: 
Step-by-step explanation:
All you have to do on this one is add the 7 on both sides.

So the answer is anything greater than 5.