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Paul [167]
3 years ago
9

Find the standard form of the equation of the parabola with a focus at (-7, 0) and a directrix at x = 7.

Mathematics
2 answers:
Volgvan3 years ago
8 0

x = 1/(4p)*y^2

x = 1/(4*-7)*y^2

x = -1/28*y^2

34kurt3 years ago
5 0

Answer:

<em>y^2 = -28x.</em>

Step-by-step explanation:

The general form for this type of parabola is y^2 = 4ax where the focus is at (a,0)  and the directrix is x = -a.

So substituting we get

y^2 = 4 * -7 * x

y^2 = -28x

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If each 6 in. On the scale drawing below equals 3 feet, what is the actual area of the shape in square units?
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Answer:

32 ft²

Step-by-step explanation:

Assuming the diagram attached below similar to the one required to complete the question below.

From the diagram,

Actaul Area of a parallelogram (A) = Actual Base(b)× actual heigth(h)

A = bh.......................... Equation 1

From the question,

If each 6 in on the scale drawing equals 3 feet

Given:

base on the scale drawing = 8 in.

Actual base(b) = (8×3)/6 = 4 feet.

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A = 32 ft²

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Express the area of the entire rectangle. Your answer should be a polynomial in standard form.
disa [49]

The standard size of the rectangle's area is x² + 12x + 35

Given:

a diagram that depicts the polynomial that denotes a rectangle's length and width.

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Add the numbers in brackets: Area = x2 + 5x + 7x + 35

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A quadrilateral with equal angles and parallel opposite sides is referred to as a rectangle. We are surrounded by numerous rectangular objects. The length and width of a rectangular shape are the two dimensions that define it. The rectangle's length and width are its longer and shorter sides, respectively. We will learn about the properties of the rectangle shape in this chapter.

To learn more about rectangle's area here

brainly.com/question/20693059

#SPJ4

Full Question = Express the area of the entire rectangle.

Your answer should be a polynomial in standard form.

x+7 x+5

4 0
1 year ago
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