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PolarNik [594]
3 years ago
8

Which is the directrix of a parabola with equation X^2=8y

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0
Alright so, After rewriting the equation in a standard parabola, you get:
4 x 2 (y-0) =(x - 0)^2

Simplify it to get: 
y= 0-p
y= 0-2

When you simplify that, your answer is:
y=-2

There you go folks, just saved you from reading that long paragraph of an answer the other guy has (I don't even think the answer is in there lol, I think he just wanted to help people solve it but still most people come here for answers)
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Answer:

B

Step-by-step explanation:

225 x 0.65 = 135

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3 years ago
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3 years ago
How far is a 10% of a 2000 kilometer trip
Dmitry_Shevchenko [17]

Answer:

answer:

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1x200=

200

Step-by-step explanation:

hope that helps

4 0
3 years ago
Read 2 more answers
Find the equation of the tangent line. y=(9-x^2)^1/3 at (1,2)​
Schach [20]

Get the derivative:

<em>y</em> = (9 - <em>x</em>²)¹ʹ³

d<em>y</em>/d<em>x</em> = 1/3 (9 - <em>x</em>²)⁻²ʹ³ d/d<em>x</em> [9 - <em>x</em>²]

d<em>y</em>/d<em>x</em> = 1/3 (9 - <em>x</em>²)⁻²ʹ³ (-2<em>x</em>)

d<em>y</em>/d<em>x</em> = -2/3 <em>x</em> (9 - <em>x</em>²)⁻²ʹ³

Evaluate it at <em>x</em> = 1 :

d<em>y</em>/d<em>x</em> (1) = -2/3 • 8⁻²ʹ³

Since 8 = 2³, we have

8⁻²ʹ³ = 1 / 8²ʹ³ = 1 / (2³)²ʹ³ = 1 / 2² = 1/4

Then the tangent line has equation

<em>y</em> - 2 = 1/4 (<em>x</em> - 1)   →   <em>y</em> = 1/4 <em>x</em> + 7/4

7 0
3 years ago
Please help me with this!!
777dan777 [17]

Answer:        Um do u still need help or no

Step-by-step explanation:

7 0
3 years ago
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