Write the augmented matrix for the system. 8x + 2z = 46 3y + 7z = 20 5x + 7y + 7z = 86
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Use the graph of the function to estimate the x-intercepts.f(x) = 4x2 - 20x + 21
A. x = 1.5, x = 3.5 B. x = -29, x = 21 C. x = 6, x = 14 D. x = -3.5, x = -1.5
Mathematics
The reduced row echelon form of the augmented matrix of a system of equations is given. Find the solutions of the system. 
A. (-2, 18, 6, 2, 0) B. No solution C. (-2, 18, 6, 2, w) for any real number w D. (-2, 18, 6, 2)
Mathematics
Solve by using the square root property.11x2 = 5
A. x = 
B. x = ± 
C. x = 
D. x = ± 
Mathematics
Evaluate the polynomial for the given value of x.3x3 - 5x2 - x + 17 for x = -2
A. -35 B. 20 C. -37 D. -25
Mathematics