Answer:
Question 1= b
question 2= d
Step-by-step explanation:
Ur welcome :)
gimme brainliest :)
 
        
             
        
        
        
Answer:
k = 2.5
Step-by-step explanation:
2.5 (4k+2) = 12k
10k + 5 = 12k
-10k
5 = 2k
5/2
2.5
 
        
                    
             
        
        
        
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√4 + √16 = 2 + 4 = 6   <--- rational
√5 + √36 = √5 + 6   <--- irrational 
√9 + √24 = 3 + √24   <--- irrational
2 * √4 = 2 * 2 = 4   <--- rational 
√49 * √81 = 7 * 9 = 63   <---rational
3√12 = 3√(4 * 3) = (3 * 2)√3 = 6√3    <---irrational
Hope this helps ^-^