Write the inequality in interval notation.x ? 2
A. (-?, 2)
B. [2 ?)
C. (2, ?)
D. (-?, 2]
Answer: B
Mathematics
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Use the Pythagorean Theorem to find the missing length in the right triangle.
A. 2
B. 8
C. 64
D. 4
Mathematics
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (cot-1 u)
A. 
B. 
C. 
D. 
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.2x2 + 3x - 9 = 0
A. {- 
, 3}
B. {
, 3}
C. {
, -3}
D. {- 
, -3}
Mathematics
Differentiate.
Mathematics