Find an equation of an ellipse satisfying the given conditions.Foci at (-2, 0), (2, 0); vertices at (-8, 0), (8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Give an appropriate answer to the question.Suppose we have a spanning tree with 23 edges. Determine the sum of the degrees of the vertices for the spanning tree.
A. 46 B. 24 C. 45 D. 23
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Write as a proportion.If 5 pounds of salmon costs $35, then 3 pounds will cost $21.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
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Find the reciprocal.- 9
A. 9
B. 
C. - 
D. 1
Mathematics
Add or subtract. Simplify your answer to lowest terms.
- 
A. 
B. 
C. 
D. 
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