Solve the inequality. Express your answer using interval notation. Graph the solution set.
< -4
A. (-?, -4) ? (4, ?)
B. (-4, 4)
C. (-?, -4]
D. ?
Answer: D
Mathematics
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A. {(-4, 8)} B. {(4, 9)} C. {(-5, 9)} D. ?
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Use the fundamental identities and simplify the expression to get a numerical value.cos x (csc x - sec x) - cot x
A. cos2x - tan2x B. 1 C. 0 D. -1
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Find u ? v.u = i + 2j, v = 7i - j
A. 0 B. 9 C. 5 D. -5
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Use the row reduction method to find the inverse of the matrix, if it exists.
?
?
A. 
B. 
C. 
D. 
E. The inverse matrix does not exist.
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