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2 years ago

Hey guys can u help me on this one, I quite don’t get it

Mathematics

1 answer:

galina1969 [7]2 years ago

3 0

Answer:

try 130

Step-by-step explanation:

dont murder me if my math is wrong....

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What would be the equation -2x+y+3=0 in y=mx+b form?

ololo11 [35]

Answer:

The answer is y = 2x - 3.

Step-by-step explanation:

Move 2x to the right side of the equation by adding it to both sides:

-2x + y + 3 = 0

y + 3 = 2x

Then, move 3 to the right side of the equation by subtracting it form both sides:

y + 3 = 2x

y = 2x - 3

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2 years ago

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The hourly cost of renting office space in Manhattan is shown by the graph below. The hourly cost of renting office space in Bro

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Step-by-step explanation:

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3 years ago

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What is the equation of the parabola in vertex form with vertex (2,-4) and directrix y=-6

Pachacha [2.7K]

Answer:

$y=\dfrac{1}{8}(x-2)^2-4$

Step-by-step explanation:

The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

$(x-x_0)^2=2px(y-y_0),$

where $(x_0,y_0)$ is the vertex of parabola and p is parabola's parameter.

By the definition, $\frac{p}{2}$ is the distance from the vertex to the directrix, so

$\dfrac{p}{2}=2\Rightarrow p=4$

Hence, the equation of parabola is

$(x-2)^2=8(y+4)$

See attached diagram for the graph of parabola and its directrix.

In vertex form this equation is

$y=\dfrac{1}{8}(x-2)^2-4$

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3 years ago