Solve the system. x + y - 2z = 83x+ z = -62x - y + 3z = -14
A. Infinitely many solutions
B. No solution
C. (-1, -2, 2)
D. (1, 1, -2)
Answer: A
Mathematics
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Evaluate the integral.
A. 
cos7 ? + C
B. 
cos6 ? + C
C. - 
cos9 ? + C
D. - 
cos8 ? + C
Mathematics
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 8x3 - 2x2 + 3x + 6
A. 0 or 2 positive; 1 negative B. 0 or 1 positive; 0 or 1 negative C. 0 or 1 positive; 2 negative D. 0 positive; 1 or 2 negative
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Graph the function.y = 
cot 
A. 
B. 
C. 
D. 
Mathematics
Simplify. 112
A. 121 B. 13 C. 22 D. 242
Mathematics