Find the standard form of the equation for the ellipse satisfying the given conditions. Center (0, 0); vertices (±8, 0); c = 4
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
You might also like to view...
Find the work done by a force F=i+5j+7k that moves an object from the point (1,0,3) to the point (4,2,7) along a straight line. The distance is measured in meters and the force in newtons.
What will be an ideal response?
Solve.The president of a certain university receives a salary three times the salary of one of the department heads. The total of the two salaries is $250,000. Determine the salaries.
A. president's salary = $18,750; department head's salary = $6250 B. president's salary = $62,500; department head's salary = $187,500 C. president's salary = $187,500; department head's salary = $62,500 D. president's salary = $125,000; department head's salary = $62,500
Determine whether the following number is prime or composite. If composite, write the prime factorization.17
A. composite, 17 ? 1 B. composite, 9 ? 2 C. prime D. composite, 8 ? 17
Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 72 seconds are required to make a 3-by-4 in. enlargement, find the time required for a 4-by-7 in. enlargement.
A. 140 seconds B. 196 seconds C. 168 seconds D. 224 seconds