Find an equation for the ellipse described.Center at (0, 0); focus at (5, 0); vertex at (7, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
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Solve the problem.A private shipping company will accept a box for domestic shipment only if the sum of its length and girth (distance around) does not exceed 120 in. What dimensions will give a box with a square end the largest possible volume?
A. 20 in. × 40 in. × 40 in. B. 20 in. × 20 in. × 100 in. C. 20 in. × 20 in. × 40 in. D. 40 in. × 40 in. × 40 in.
Write the equation of the ellipse with foci at 
, 
, and 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_c9a3df440547487ab53ef9974" />. Express the equation in standard form. What will be an ideal response?
Find the slope of the line.
A. 
B. 
C. - 
D. - 
Find the product of the sum and difference of two terms.
A. 
x2 + 
B. 
x2 - 
C. 
x2 - 
D. 
x2 - 
x