True or false?(A ? B) ? C = A ? (B ? C)

A. True
B. False

Answer: B

Mathematics

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Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -x2 + 13x - 6

A. Increasing on ; decreasing on 
B. Increasing on ; decreasing on 
C. Increasing on ; decreasing on 
D. Increasing on ; decreasing on 

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Mathematics

Divide.

A. x2 + 4
B. x + 4 + 
C. x - 4  
D. x + 4  

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Mathematics

Use the quadratic formula to solve the equation. Simplify any radicals.(x + 5)(x - 8) = 4

A.
B.
C.
D.

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Mathematics

Multiply. Simplify the final answer. ? 

A.
B.  
C.  
D.  

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Mathematics