Solve the system using Gaussian elimination.-5x - y - 5z = -68-8x + 4y + 6z = 34-7x - 9y + z = -46
A. {(4, 3, 9)}
B. {(-4, 3, 8)}
C. {(4, 9, 3)}
D. ?
Answer: A
You might also like to view...
Find v ? u.v = -7i + 4j and u = 5i + 3j
A. -47 B. -23 C. -2i + 7j D. -35i + 12j
Solve the problem.How many triangles (of any size) are there in the figure?
A. 19 B. 13 C. 15 D. 16
Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry.f(x) = x2 + 4x - 7
A. vertex: 
x-intercepts: (-4, 0) and (3, 0)
y-intercept: (0, -12)
axis of symmetry: x = - 
B. vertex: (-2, -11)
x-intercepts: (-2 ± 
, 0)
y-intercept: (0, -7)
axis of symmetry: x = -2 
C. vertex: (-2, 3)
x-intercepts: none
y-intercept: (0, 7)
axis of symmetry: x = -2
D. vertex: (4, 0)
x-intercept: (4, 0)
y-intercept: (0, 7)
axis of symmetry: x = 4 
Write the equation of the line whose graph is shown.
A. y = 2x + 6
B. y = - 
x + 2
C. y = -2x + 6
D. y = - 3x + 6