Evaluate the expression.
2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve.5x - y - 8z = 15-7x + 8y + 3z = 229x - 2y + z = 56
A. (-8, 9, 16) B. No solution C. (8, 9, 2) D. (8, 2, 9)
Mathematics
Solve the equation.
= 0
A. - 
, 
B. - 
, 
C. - 
, 
D. - 
, 
Mathematics
Write the trigonometric expression as an algebraic expression containing u and v.cos (tan-1 u + tan-1 v)
A. 
B. 
C. 
D. 
Mathematics
Evaluate the function.Find f(0, 1, -1) when f(x, y, z) = 2x - 5yz + 7x.
A. 5 B. 6 C. -5 D. -4
Mathematics