Factor completely.2y2z - 20yz + 42z
A. (yz + 3)(2yz + 14)
B. (2yz + 3)(y + 7)
C. 2z(y - 3)(y - 7)
D. 2z(y + 3)(y + 7)
Answer: C
Mathematics
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Solve the problem.A die is rolled 11 times. Find the probability of rolling exactly 11 ones.
A. Approximately 1.7 × 10-8 B. Approximately 2.8 × 10-9 C. Approximately 9.9 × 10-8 D. Approximately 6.0 × 10-7
Mathematics
Solve the system of equations using the inverse of the coefficient matrix.
A. x = 9, y = 4, z = 5 B. x = 9, y = 5, z = 4 C. x = -9, y = 5, z = 18 D. The system is inconsistent.
Mathematics
Use a graphing utility to select the graph of the function. Include two full periods. ? y = -2 sin (2x + ?) ?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the equation.
+ 6 = x
A. {6} B. {1, 12} C. {12} D. ?
Mathematics