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drek231 [11]
2 years ago
13

A parabola has a vertex at (0,0). The focus of the parabola is located at (4,0). What is the equation of the directrix? x=−4 y=−

4 x=4 y=4
Mathematics
2 answers:
rewona [7]2 years ago
7 0

Answer:

Step-by-step explanation:

The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.

The vertex is halfway between focus and directrix. Directrix: x = -4

Greeley [361]2 years ago
5 0

Answer:

-4

Step-by-step explanation:

Got it right on edge

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Given that P = (-5, 5) and Q = (-13, 10), find the component form and magnitude of 2 vector PQ.
Brut [27]
Define unit vectors along the x-axis and the y-axis as \hat{i} , \, \hat{j} respectively.

Then the vector from P to Q is
\vec{PQ} = (-13+5)\hat{i} + (10-5)\hat{j} = -8\hat{i} + 5\hat{j}
In component form, the vector PQ is (-8,5).

The magnitude of vector PQ is
√[(-8)² + 5²] = √(89) = 9.434

Answer:
The vector PQ is (-8, 5) and its magnitude is √89  (or 9.434).
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3 years ago
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If a right circular cone is intersected by a plane so that the intersection goes through the cone’s vertex as well as an edge of
Klio2033 [76]

Answer:

It is C.

Step-by-step explanation:

Im finding it a bit difficult to put it into words - but you can picture it in your brain. It is a line. The plane is just touching the surface of the cones.

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3 years ago
Just before her party starts, Jane fills a cooler with 80 cups of ice. She also starts filling glasses with ice, 0.8 cups each.
Fofino [41]

The equation that shows how the total number of cups of ice used, y, depends on the number of glasses filled, x, is y = 0.8x + 80

<h3>Linear function</h3>

Filling the cooler is an illustration of a linear function

A linear function is represented as: y = mx + b

Where

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  • b represents the y-intercept/the initial value
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<h3>The equations</h3>

By comparison, we have the following parameters

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So, the equation that represents this scenario is

y = 0.8x + 80

Read more about linear functions at:

brainly.com/question/14323743

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2 years ago
Dose anyone know the answer:(?
cricket20 [7]

Answer: c :)

Step-by-step explanation:

subtract 4

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6 0
2 years ago
Kendra gets a paycheck of $300 after 5 days of work. At this rate, how much does she get paid for working 24 days?
Talja [164]

Answer:

1440

Step-by-step explanation:

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2 years ago
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