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Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8. a. f(x) = -1/8 (x - 2)2 + 6 b. f(x) = 1/8 (x - 2)2 + 6 c. f(x) = -1/8 (x + 2)2 + 8 d. f(x) = 1/8 (x + 2)2 + 8
asked
Oct 23, 2017
Mathematics
middle-school
2
answers
1
vote
155k
views
The ability to _ is an adaption to avoid predators ?
asked
Jul 3, 2017
Biology
high-school
2
answers
1
vote
42.6k
views
the area of rectangular lot is represented by 6t^2+13t-5. what are the dimensions of the rectangular lot?
asked
Sep 19, 2016
Mathematics
high-school
1
answer
1
vote
92.9k
views
7*10*2+5 HELP HELP HELPPPPPPP
asked
Jul 28, 2016
Mathematics
high-school
2
answers
3
votes
151k
views
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