Find an equation for the indicated ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Evaluate the improper integral.
A. 
(1 - ln 2)
B. 
(1 - ln 2)
C. 
(1 - ln 2)
D. 
(1 - ln 2)
Mathematics
Solve the problem.At a track meet, Russell ran the first heat of the 100-yd dash in 15.5 sec, Sergy in 15.8 sec, and Omar in 16.2 sec. In the second heat, they got 15.3 sec, 15.4 sec, and 15.7 sec. Write a 3 x 1 matrix giving the changes in times. If the changes repeat, who will win?
A. 
, Sergy
B. 
, Omar
C.
[-0.2 -0.4 -0.5], Russell
D.
[0.2 0.4 0.5], Sergy
Mathematics
Find the radius or diameter as requested.Find the radius.
A. 4973.89 yd B. 19.9 yd C. 124.972 yd D. 39.8 yd
Mathematics
When possible, apply the distributive law and combine like terms.(-7)(9x + 9y) + 8(3x + 7y)
A. -126xy B. -39x - 7y C. -39x + 9y + 7 D. 2x - 7y
Mathematics