The radius of a circle is 2 feet wat is the circles circumference?use 3.14 for n
1 answer:
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Answer:
24 kilometers
Step-by-step explanation:
It's a simple calculation using cross multiplication:
We have the following ratios:
That's 2.4 million of cm... or 24 000 meters... or 24 kilometers.
That's equivalent to 300,000 cups placed side by side. That's a long way!
Answer:
D. (y +4)² = -4(x -2)
Step-by-step explanation:
The directrix is a vertical line, and the focus is to the left of it. The parabola will open to the left.
The vertex is halfway between the focus and directrix, so is located on the same horizontal line as the focus, at ...
x = (1 +3)/2 = 2
The focus to vertex distance is the difference in x-coordinates: 1 -2 = -1. This is the value of p in the form ...
(y -k)² = 4p(x -h) . . . . . . . parabola with vertex (h, k)
The equation is ...
(y +4)² = -4(x -2)
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<em>Additional comment</em>
Once you determine that the directrix is a vertical line, you know the equation will have a y² term. The only answer choice that has that is D.
