An elliptical stained-glass insert is to be fitted in a 4ft by 6ft rectangular opening (see figure).
Using the coordinate system shown, find an equation for the ellipse.
?
A. 
B. 
C. 
D. 
E. 
Answer: B
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Solve. x2 - 3y2 = 14x2 + 3y2 = 19
A. (1, 2), (-1, 2), (1, -2), (-1, -2) B. (2, 1), (2, -1), (-2, 1), (-2, -1) C. (2, 1) and (-2, -1) D. (-1, 2) and (1, -2)
Solve the problem.A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same time, and walk at the same speed along different legs of the triangle. If the area formed by the positions of the two people and their starting point (the right angle) is changing at 
then how fast are the people moving when they are 
from the right angle? (Round your answer to two decimal places.)
A. 3.00 m/s B. 0.50 m/s C. 1.00 m/s D. 2.00 m/s
Divide and write answer in lowest terms.16 ÷ 
A. 4
B. 3
C. 2
D. 
Solve the problem.Anne and Nancy use a metal alloy that is 16% copper to make jewelry. How many ounces of an alloy that is 10% copper must be mixed with an alloy that is 20% copper to form 55 ounces of the desired alloy?
A. 38 ounces B. 33 ounces C. 22 ounces D. 24 ounces