Find the lengths of the sides of the triangle with the indicated vertices.
?

?

A. d1=, d2= ?d3=
B. d1=, d2=, d3= 
C. d1=, d2= , d3= 
D. d1=, d2= , d3= 
E. d1=, d2= , d3= 


Answer: D

Mathematics

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A. vertex: (3, 1)
focus: (3, 2)
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focus: (-2, -1)
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directrix: x = 0

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focus: (-3, 0)
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Solve the problem.In a 1-mile race, the winner crosses the finish line 10 feet ahead of the second-place runner and 30 feet ahead of the third-place runner. Assuming that each runner maintains a constant speed throughout the race, by how many feet does the second-place runner beat the third-place runner? (5280 feet in 1 mile.)

A. -20.11 ft B. 10.02 ft C. -10.06 ft D. 20.04 ft

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