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 ? 2 and x ? -1
A. [-1, 2]
B. (-?, -1] ? [2, ?)
C. (-?, 2]
D. (-?, -1]
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Determine whether the proportion is true or false by writing the ratios in lowest terms.
= 
A. True B. False
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Solve the system by using the inverse of the coefficient matrix. x + y + z = 4 x - y + 4z = -195x + y + z = 24
A. No solution B. (-5, 4, 5) C. (-5, 5, 4) D. (5, 4, -5)
Mathematics
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A. (x2 + 1)(x - 1)(x + 1) B. (x2 + 1)(x2 - 1) C. (x2 - 1)(x - 1)(x + 1) D. (x + 1)2(x - 1)2
Mathematics