Find an equation of the ellipse.An ellipse with endpoints of major axis at (0, 9), (0, -9); c = 5
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Solve the problem.The half-life of carbon-14 is 5700 years. Find the age of a sample in which 8% of the radioactive nuclei originally present have decayed.
Fill in the blank(s) with the appropriate word(s).
Mathematics
List four equivalent forms for the rational expression.- 
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Multiply.
A. 15,000 B. 56,000 C. 560,000 D. 5,600
Mathematics
Select the augmented matrix for the system of linear equations.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics