Write the following as an algebraic expression in u, u > 0.sin 
A. 
B. 
C. u
D. 
Answer: D
Mathematics
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Determine the system of inequalities illustrated in the graph. Write inequalities in standard form.
A. y ? -2 x2 + y ? 4 B. x ? -2 x2 + y ? 4 C. y ? -2 x2 + y ? 4 D. y ? -2 -x2 + y ? 4
Mathematics
Factor by grouping.x3 + 7x2 - 3x - 21
A. (x - 7)(x2 - 3) B. (x2 + 7)(x - 3) C. (x + 7)(x3 - 3x) D. (x + 7)(x2 - 3)
Mathematics
Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.x > 7 or x < 7
A. (7, ?)
B. (-?, 7) ? (7, ?)
C. (-?, 7)
D. ?
Mathematics
Find the inverse, if it exists, of the given matrix.
A. 
B. 
C. 
D. Does not exist
Mathematics