The answer would be be B 
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You first factor out 54 and thats 3^2 * 6 
(The factor of a # is what you multiply to get the answer)
You then do the same to x^9 and y ^7
After that you should have square root of [3^2 * 6x^8 * xy^6 * y]
When you combine this you will get 3x^4 y^3 sqre root [6xy]
        
             
        
        
        
2x - 8 < 12
2x < 12 + 8
2x < 20
x < 20/2
x < 10
        
             
        
        
        
Answer:
64 
Step-by-step explanation:
4 * 4 * 4 = 64
 
        
             
        
        
        
Answer:
90,92,94
Step-by-step explanation:
1st number= x
2nd number= x+2
3rd number= x+4
x+x+2+x+4= 276
3x+6= 276
3x=270
x=90
x+2= 92
x+4=94 
hope this helps- i did this in class
brainliest really needed!!