Solve the problem.How many different vertical arrangements are there of 9 flags if 4 are white, 3 are blue, and 2 are  red?

A. 24
B. 1260
C. 126
D. 26


Answer: B

Mathematics

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Simplify the algebraic expression.18x2 - 18x2

A. 0 B. -36x2 C. x2 D. cannot be simplified

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Find the exact value of the expression.cos 840°

A.
B. - 
C. - 
D. - 

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Determine whether the polynomial function is cubic or quartic.

A. Cubic B. Quartic

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Solve. Try factoring first. If factoring is not possible or is difficult, use the quadratic formula.5x2 + 12x = - 6

A.
B.  
C.  
D.  

Mathematics