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3 years ago

Equation of a circle with the center (-4, 2) and the radius at 4?

Mathematics

1 answer:

mojhsa [17]3 years ago

4 0

X2+8x+y2−4y+4=0 is the Answer

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What is the equation of the line graphed below?

vesna_86 [32]

Answer:

The answer to your question is: letter B

Step-by-step explanation:

Data

A (-5, 4)

B (4, 1)

Formula

slope = m = $\frac{1 - 4}{4 + 5}$

m = $\frac{-3}{9}$ = $\frac{-1}{ 3}$

Point slope

(y - 4) = $\frac{-1}{3}$ (x + 5)

4 0

3 years ago

helppp please ???????? i don’t understand

Vedmedyk [2.9K]

Answer:

should be -8

Step-by-step explanation:

when reflecting over the x-axis, y changes from positive to negative or negative to positive. x stays the same.

when reflecting over the y-axis, x changes from positive to negative or negative to positive. y stays the same.

4 0

3 years ago

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Obtain the general solution to the equation. (x^2+10) + xy = 4x=0 The general solution is y(x) = ignoring lost solutions, if any

alukav5142 [94]

Answer:

$y(x)=4+\frac{C}{\sqrt{x^2+10}}$

Step-by-step explanation:

We are given that a differential equation

$(x^2+10)y'+xy-4x=0$

We have to find the general solution of given differential equation

$y'+\frac{x}{x^2+10}y-\frac{4x}{x^2+10}=0$

$y'+\frac{x}{x^2+10}y=4\frac{x}{x^2+10}$

Compare with

$y'+P(x) y=Q(x)$

We get

$P(x)=\frac{x}{x^2+10}$

$Q(x)=\frac{4x}{x^2+10}$

I.F= $e^{\int\frac{x}{x^2+10} dx}=e^{\frac{1}{2}ln(x^2+10)}$

$e^{ln\sqrt(x^2+10)}=\sqrt{x^2+10}$

$y\cdot \sqrt{x^2+10}=\int \frac{4x}{x^2+10}\times \sqrt{x^2+10} dx+C$

$y\cdot \sqrt{x^2+10}=\int \frac{4x}{\sqrt{x^2+10}}+C$

$y\cdot \sqrt{x^2+10}=4\sqrt{x^2+10}+C$

$y(x)=4+\frac{C}{\sqrt{x^2+10}}$

6 0

3 years ago

What is the slope of the line graphed in the coordinate grid?

zvonat [6]

Answer:

3/4

Step-by-step explanation:

I drew a slope triangle and found the slope by finding the distance between two points on the line.

$vertical distance/horizontal distance$

Hope this helped!

5 0

3 years ago

Melanie is 2 years older than Bill. Bill is 27 years old. After correctly carrying out the Solve step of the five-step problem-s

slava [35]

it should just be 2 + 27 in order to find her age!

8 0

3 years ago

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