Identify the equation without applying a rotation of axes.4x2 - 8xy + 4y2 - 3x + 6 = 0
A. circle
B. parabola
C. ellipse
D. hyperbola
Answer: B
Mathematics
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Perform the matrix operation.Let B = 
. Find -2B.
A. 
B. 
C. 
D. 
Mathematics
Find the sum.13
+ 
A. 6
B. 19
C. 6
D. 18
Mathematics
Give a rule for the piecewise-defined function. Then give the domain and range.
A. f(x) = 
; Domain: (-?, 1) ? [5, ?), Range: (-?, ?)
B. f(x) = 
; Domain: (-?, 1) ? [5, ?), Range: (-?, ?)
C. f(x) = 
; Domain: (-?, ?), Range: (-?, 1) ? [5, ?)
D. f(x) = 
; Domain: (-?, ?), Range: (-?, 1) ? [5, ?)
Mathematics
Solve the problem.If half a number is added to 9, the result is greater than or equal to -9. Find all such numbers.
A. x ? 0 B. x ? -81 C. x ? -36 D. x > -36
Mathematics