Hi! I found the vertex for this problem, but how would I find the rest of the equation?
1 answer:
If you're working with focus and directrix, you know the equation of the quadratic is
.. y = 1/(4p)*(x -h)^2 +k
where p is the distance from focus to vertex or half the distance from focus to directrix. P is positive when the focus is above the directrix, as here. Of course, (h, k) is the vertex.
Selection (4) is appropriate.
.. y = 1/(4p)*(x -h)^2 +k
where p is the distance from focus to vertex or half the distance from focus to directrix. P is positive when the focus is above the directrix, as here. Of course, (h, k) is the vertex.
Selection (4) is appropriate.
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Answer:
is the fraction of 8th graders who are boys.
Step-by-step explanation:
Let total number of 8th graders =
Given that, of 8th graders play sports
8th graders who play sports =
Also, Given that, of 8th graders that play sports are boys
Number of 8th graders that play sports, and are boys =
Hence, the answer is:
is the fraction of 8th graders who are boys.