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never [62]
3 years ago
13

Find the center and the radius of the circle with the equation: x^2-4x+y^2

Mathematics
1 answer:
zysi [14]3 years ago
8 0

Answer:

Step-by-step explanation:

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Write an equation of the line passing through the point A(3,−4)
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What is the percent of decrease from 25 to 15? Round your answer to the nearest tenth.
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Step-by-step explanation:

25=100%

50%=12.5

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Find an equation for the plane y=4x in cylindrical coordinates. (Type theta for θ in your answer.)
Paha777 [63]

Answer:

<h2><em>sinθ - 4cosθ = 0</em></h2>

Step-by-step explanation:

Given the equation of a plane in rectangular coordinates to be y = 4x.

The cylindrical coordinates of the axis is as given below;

x = rcosθ

y = rsinθ

z = z

Since there is no z coordinate in the equation of the plane given, we will only substitute x = rcosθ and y = rsinθ into the equation y = 4x and simply the result as shown;

y = 4x

rsinθ = 4( rcosθ)

rsinθ = 4rcosθ

sinθ = 4cosθ

sinθ - 4cosθ = 0

<em>Hence the equation for the plane in cylindrical coordinate is expressed as sinθ - 4cosθ = 0</em>

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3 years ago
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