Sarah peeled 84 oranges in 7 hours. At that rate, how many oranges would she peel in 15 minutes?

1 answer:

3 0

Answer:

Sarah would peel 3 oranges in 15 minutes

Explanation:

I’m not sure if I did it right but i multiplied 7 by 60 (hours by minutes in an hour) and got 420. Then I divided it by 15 and got 28. Finally, I divided 84 by 28 and I got 3. I don’t if I am late or right for this question though.

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Archy [21]

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Answer:

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Step-by-step explanation:

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Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = −1

VikaD [51]

Answer:

Step-by-step explanation:

If you plot the focus and the directrix you see that the focus is above the directrix. Since a parabola always wraps itself around the focus, this parabola opens upwards and has the standard form equation:

$(x-h)^2=4p(y-k)$ where h and k are the coordinates of the vertex and p is the number of units between the vertex and the focus, or the vertex and the directrix. This number of units will be the same for both since the vertex is smack dab inbetween the focus and the directrix. The focus is also on the axis of symmetry, which means that it shares the x coordinate with the vertex (which is actually the h coordinate) of -5. Halfway between the y value of 5 and the y value of -1 is 2. So the vertex is located at (-5, 2). The number of units between the vertex and the focus is 3, so the equation is: