Solve the inequality and graph the solution set.|z - 7| ? 0
A. 7 ? z ? -7 ; [7, -7]
B. No solution
C. z ? 7 ; [7, ?)
D. All real numbers ; (-?, ?)
Answer: D
Mathematics
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Simplify.(4x2 - xy - y2) + (x2 + 9xy + 11y2)
A. 5x2 + 8xy + 10y2 B. 3x2 - 10xy - 12y2 C. 5x2 + 10xy + 12y2 D. 4x2 + 9xy + 11y2
Mathematics
Write the slope-intercept form for a line satisfying the stated conditions.Slope - 
; y-intercept 5
A. f(x) = 
x - 5
B. f(x) = 
x + 5
C. f(x) = - 
x - 5
D. f(x) = - 
x + 5
Mathematics
Divide.
A. y - 9
B. y2 + 9
C. y + 9
D. y + 
Mathematics
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.3x - 3y + 5z = 7-5x - 2y + 3z = 28x + 3y - 2z = -10
A. 
B. 
C. 
D. No solution
Mathematics