3 years ago

What is the equation of the parabola with focus (-2, 2) and directrix y = -1?

Mathematics

1 answer:

arsen [322]3 years ago

7 0

Answer:

(x+2)^2=6(y-1/2)

Step-by-step explanation:

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The variable z is inversely proportional to x. When x is 16, z has the value 0.875. What is the value of z when x= 21?

ziro4ka [17]

For $z$ and $x$ to be inversely proportional, there must be some constant $k$ such that

$zx=k$

Given that $z=0.875$ when $x=16$ , it follows that

$0.875\cdot16=k\implies k=14$

Then when $x=21$ , we have

$21z=14\implies z=\dfrac{14}{21}=\approx0.667$

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3 years ago

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Irina18 [472]

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