Factor.x2 + 7x + 12
A. (x + 4)(x - 3)
B. (x - 4)(x - 3)
C. (x + 4)(x + 3)
D. (x - 4)(x + 3)
Answer: C
Mathematics
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Determine if the argument is valid or invalid. Give a reason to justify answer.If it is cold, then you need a coat.You do not need a coat. ? It is not cold.
A. Valid by the law of contraposition B. Invalid by fallacy of the inverse C. Invalid by fallacy of the converse D. Valid by the law of syllogism
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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
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Evaluate the spherical coordinate integral.
A. 
B. 
?
C. 
?
D. 
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Simplify.8a - 2a - a - 12
A. 6a - 13 B. 5a - 12 C. 6a - a - 12 D. 6a - 12
Mathematics