Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (2
, 0) and (-2
, 0)
B. foci at (0, 2
) and (0, -2
)
C. foci at (
, 0) and (-
, 0)
D. foci at (2
, 0) and (-2
, 0)
Answer: D
Mathematics
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Evaluate the determinant:
Mathematics
The building code in a certain town requires that a house be at least 11 ft from the boundaries of the lot. The buildable area (or building envelope) for the rectangular lot shown in the figure is given by
?
A = (x - 22)(y - 22)
?
?
?
?
Expand to express A as a polynomial in x and y.
?
A. xy + 22x + 22y - 484 B. xy - 22x - 22y + 539 C. xy - 22x - 22y + 484 D. xy - 11x + 11y - 454 E. xy - 11x - 11y + 484
Mathematics
Graph the piecewise-defined function.
?
?
A. ?
B. ?
C. ?
D. ?
Mathematics
Perform the indicated operation.
+ 
A. - 
x2 + 
x - 
B. - 
x4 + 
x2 - 
C. 2x2 - 
x + 
D. - 
x6 - 
Mathematics