Find an equation for the ellipse described.Center at (0, 0); focus at (-2, 0); vertex at (7, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
You might also like to view...
Solve by the substitution method.-7x + 99 = 6y3x - 2y = 15
A. {(8, 7)} B. {(9, 6)} C. {(x, y)|3x - 2y = 15} D. ?
The unit selling price p (in dollars) and the quantity demanded (in pairs) of a certain brand of women's gloves is given by the demand equation 
.
?
What is the marginal revenue to the nearest cent per day when x = 100?
?
A. The marginal revenue when x = 100 is $135.55 per day. B. The marginal revenue when x = 100 is $141.41 per day. C. The marginal revenue when x = 100 is $149.82 per day. D. The marginal revenue when x = 100 is $0.90 per day.
Use the leading coefficient test to determine whether y?? or y?-? as
y = -3x6 + 5x5 - x2 - 7x + 6
A. -? B. ?
Find the solution or solutions, if any exist, to the system.
A. infinitely many solutions of the form x = 
+ 
z, y = - 
+ 
z, z = z
B. infinitely many solutions of the form x = 
+ 
z, y = 
+ 
z, z = z
C. infinitely many solutions of the form x = 
- 
z, y = 
+ 
z, z = z
D. infinitely many solutions of the form x = 
- 
z, y = - 
+ 
z, z = z