Represent the linear system as an augmented matrix. 2x + 9y + 2z = 45-2x + 9y + 6z = 57 2x + 2y + 5z = 42
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Express as a single logarithm, and, if possible, simplify.3 log3 (2x - 1) + 2 log3 (6x - 2)
A. 6 log3 (2x - 1)(6x - 2)
B. log3((2x - 1)3(6x - 2)2)
C. log3((2x - 1)3 + (6x - 2)2)
D. log3 
Mathematics
Solve using matrices. x + y + z = 2 x - y + 5z = 163x + y + z = 8
A. (-3, 2, 3) B. (2, -3, 3) C. (3, -3, 2) D. (2, 3, -3)
Mathematics
Insert a decimal point in the product.39.81 × 4.6 = 183126
A. 183,126. B. 18.3126 C. 1831.26 D. 183.126
Mathematics
Write the sum or difference as a product containing only sines and/or cosines.cos(6?) - cos(2?)
A. 2 cos(4?) cos(2?) B. 2 cos(2?) C. -2 cos(4?) sin(2?) D. -2 sin(4?) sin(2?)
Mathematics