Find an equation for the ellipse described.Center at (0, 0); focus at (0, -2); vertex at (0, 8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
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Let b = 212 and é = 21.7ø. Find c.
What will be an ideal response?
Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 102 feet. The height of the arch 27 feet from the center is to be 11 feet. Find the height of the arch at its center.
A. 20.78 ft B. 27.65 ft C. 11.41 ft D. 12.97 ft
Find the percent. Round to the nearest tenth of a percent.What percent of 200 miles is 12.1 miles?
A. 6.1% B. 0.1% C. 0.2% D. 1652.9%
Solve the problem.Tickets to a ballet cost $12 if bought by an early date. If bought on the date of the ballet, they cost $21. If the total money collected from ticket sales should be at least $330, write an inequality to show the possible combinations of early tickets and same-day tickets.a) Write an inequality to describe the situation.b) Graph the inequality.
A. 12x - 21y ? 330;
B. 12x + 21y ? 330;
C. 12x - 21y ? 330;
D. 12x + 21y ? 330;