Answer:
67 eghan says the difference between the least amount of time it takes a student to say the alphabet and the greatest amount 
Step-by-step explanation:
 
        
             
        
        
        
D because one thousand nine hundred twenty divided by 8 equals two hundred and forty
        
                    
             
        
        
        
Step-by-step explanation:

 
        
             
        
        
        
Answer:
2(x + y)² - 9( x + y ) -5 = 0
⇒2(x + y)² - 10 (x+y) +1(x+y) -5 = 0
⇒2(x+y)(x + y - 5 ) + 1(x + y -5 ) = 0
taking (x + y -5 ) common , 
⇒(x + y -5 )[2(x + y) + 1]  =0 
⇒(x + y -5)(2x + 2y +1) =0
hope , you got this 
 
        
             
        
        
        
The answer is B: <span> a^12/b^6
Proof:
Simplify the following:
(a^4/b^2)^3
Multiply each exponent in a^4/b^2 by 3:
(a^(3×4))/((b^2)^3)
3×4 = 12:
a^12/(b^2)^3
Multiply exponents. (b^2)^3 = b^(2×3):
a^12/b^(2×3)
2×3 = 6:
Answer:  a^12/b^6</span>