Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±9) and foci at 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Prove that the equation is an identity.tan x csc x = csc x
What will be an ideal response?
Mathematics
Provide an appropriate response.Construct step 2 for the fractal below. 
A. 
B. 
C. 
D. 
Mathematics
Find the asymptotes of the hyperbola.
- 
= 1
A. y = 
x + 1, y = - 
x + 1
B. y = 
x + 1, y = - 
x + 1
C. y = 
x, y = - 
x
D. y = 
x, y = - 
x
Mathematics
Provide an appropriate response.True or false? If marginal cost is decreasing then the average cost must be decreasing.
A. True B. False
Mathematics