Answer:
a
Step-by-step explanation:
 
        
             
        
        
        
Answer:
3 to the fourth power, which equals 81.
Step-by-step explanation:
 
        
             
        
        
        
The third one
U solve from left to right and when two negatives are next to each other it turns to a plus.
        
             
        
        
        
Answer:
12/30
Step-by-step explanation:
Here is the complete question 
Three of these fractions are equivalent A.30/70 B.12/30 C.9/21 D.6/14 which one is the odd one out
to determine the equivalent fractions, convert the fractions to percentage 
 × 100 = 42.86%
 × 100 = 40%
 × 100 = 42.86%
 x 100 = 42.86%
Another method is to convert the fraction to its simplest form 
30/70 
To transform to the simplest form. divide both the numerator and the denominator by 10 = 3/7
12/30 
To transform to the simplest form. divide both the numerator and the denominator by 6 = 2/5
9/21 
To transform to the simplest form. divide both the numerator and the denominator by 3 = 3/7
6/14
To transform to the simplest form. divide both the numerator and the denominator by 2 = 3/7
Using either methods, 12/30 is the odd one out  
 
        
             
        
        
        
Answer:
<h2>1</h2>
Step-by-step explanation:
I hope this helps