Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-3x - 3y - 3z = -3-9x - 8y - 7z = -6-6x - 5y - 4z = -3
A. (-2, 3, 0)
B. (-2, 6, 0)
C. (z - 2, -2z + 3, z)
D. No solution
Answer: C
Mathematics
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A. AB is not defined.
B. 
C. 
D. 
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 2, cos ? < 0Find cos 
.
A. 
B. 
C. - 
D. -
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Solve the system.
A. (-2, -5, 2) B. (2, -5, -2) C. (-2, 2, -5) D. ?
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Verify the identity.sec 
= -csc x
What will be an ideal response?
Mathematics