Use the Gauss-Jordan method to solve the system of equations. x - y + 3z = -8 x + 5y + z = 405x + y + 13z = 10
A. (8, 8, 0)
B. (0, 8, 0)
C. (8, 0, 8)
D. No solution
Answer: D
Mathematics
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Multiply.-5(-7)(-7)
A. -245 B. 70 C. -235 D. 245
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 18x(x + 6)
Mathematics
Solve the system by elimination.4x2 - y2 = 27x2 + 2y2 = 27
A. (3, 3), (3, -3), (-3, 3), (-3, -3)
B. (3, 9), (3, -9), (-3, 9), (-3, -9)
C. (3
, 3), (3
, -3), (-3
, 3), (-3
, -3)
D. empty set
Mathematics
Find the equation of the line passing through the indicated two points. Write the equation in point-slope form.(-3, 3) and (6, -7)
A. y + 3 = - 
(x - 3) or y - 7 = - 
(x + 6)
B. y - 3 = 
(x + 3) or y + 7 = 
(x - 6)
C. y - 3 = - 
(x + 3) or y + 7 = - 
(x - 6)
D. y + 3 = 
(x - 3) or y - 7 = 
(x + 6)
Mathematics