Answer:
91 radical 
Step-by-step explanation:
because because two radicals make a radical and when you add those numbers together there 91 so 91 radical
 
        
             
        
        
        
Ok so first you would create a proportion. 
8/x=4/1. Next you cross multiply and divide, 
1 • 8÷4=x. Ratios are fractions with the first number being the numerator and the second being the denominator. If you think of it this way, you just find an equivalent fraction. Your answer would be 8:2 because in your proportion x=2.
        
             
        
        
        
Answer:
16  1/12
Step-by-step explanation:
The LCD of 6 1/3 + 5 1/2 + 4 1/4 is 12; 12 is evenly divisible by 3, 2 and 4.
We can rewrite this expression as:
6 + 5 + 4 + 1/3 + 1/2 + 1/4, or
     15        +4/12 + 6/12 + 3/12, or
     15         + 13/12, or
      16  1/12
 
        
             
        
        
        
All are correct 
Explanation:since in none of the answers share the same the same X value and since the graph passes the vertical line test it is a function