Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with a vertex at (0, -9) and a focus at at 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Find the value of the expression.
A. 
B. 2
C. 
D. 
Mathematics
Find the rational fraction in lowest terms represented by the periodic decimal.0.44444 . . .
A. 
B. 
C. 
D. 
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.y - 9x = 09x2 + y2 = 90
A. (1, 9) B. (-1, -9), (1, 9), (-1, 9), (1, -9) C. (-1, -9), (1, 9) D. (-1, -9)
Mathematics
Solve the problem.A rectangular piece of fabric is 
by 
A triangular area with a height of 
and a base of 
is cut from the fabric. How much area is left over?
A. 208.32 ft2 B. 377.28 ft2 C. 277.2 ft2 D. 188.64 ft2
Mathematics