Factor completely.u2 - 4uv - 21v2
A. (u - v)(u + 7v)
B. (u - 3v)(u + v)
C. (u - 3v)(u + 7v)
D. (u + 3v)(u - 7v)
Answer: D
Mathematics
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Solve the problem.Give the measure of the obtuse angle: 75°, 90°, 105°, 180°.
A. 105° B. 75° C. 90° D. 180°
Mathematics
Find the indicated matrix.X, where X - A = B, A = 
, B = 
A. 
B. 
C. 
D. 
Mathematics
Solve the rational inequality. Write the solution set using interval notation; then graph the solution set on a number line.
> x
A. (0, 3) ? (6, ?)
B. (-?, 3) ? (6, ?)
C. (-?, 0) ? (3, 6)
D. (6, ?)
Mathematics
Indicate whether the value of x shown is a solution of the given inequality by answering true or false.Value of x: 1
Inequality: 2(x + 6) > 12
A. True B. False
Mathematics