Use the Gauss-Jordan method to solve the system of equations. 5x - y + 2z = 2 6x + 7y - 4z = 37 4x - 9y + z = -40
A. (-1, 5, 2)
B. (1, 5, 1)
C. No solution
D. (1, 1, 5)
Answer: B
Mathematics
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Solve the problem.Integrate 
over the region 1 ? x2 + y2 ? 64.
A. 2? ln 8 B. 2?(ln 8)2 C. ? ln 8 D. ?(ln 8)2
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Add or subtract. Simplify the answer.
+ 
A. 
B. 
C. 
D. 
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Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. h
D. 
Mathematics
Tell whether each of the following statements is true or false.
a. {Real} ? {Integers} b. {Naturals} ? {Real}
Mathematics