Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.5x + 2y - 3z = 4-10x - 4y + 6z = -86x + 8y - 9z = 5
A. 
B. 
C. 
D. No solution
Answer: C
Mathematics
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Solve the problem.If f(x) = 
and g(x) = 4x + 3, find g(f(x)).
A. x
B. - 
C. 4x + 9
D. x + 6
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Round the whole number to the given place value.3073, thousands
A. 3100 B. 2900 C. 3000 D. 4000
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Fill in the blank with one of the words or phrases listed below. 
If cross products are 
the proportion is true.
A. not equal B. right C. congruent D. equal
Mathematics
Compare the graph of the given quadratic function f with the graph of y = x2.f(x) = - 
x2
A. Wider B. Narrower C. Reflected across the x-axis and narrower D. Reflected across the x-axis and wider
Mathematics