3 years ago

Which inequality is true?

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

Answer:

C) 3pi>9

Step-by-step explanation:

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Find the general solution of (x+3)y’=2y

gregori [183]

Answer:

$y=C(x+3)^2$

Step-by-step explanation:

We are given:

$\displaystyle (x+3)y^\prime=2y$

Separation of Variables:

$\displaystyle \frac{1}{y}\frac{dy}{dx}=\frac{2}{x+3}$

So:

$\displaystyle \frac{dy}{y}=\frac{2}{x+3} \, dx$

Integrate:

$\displaystyle \int\frac{dy}{y}=\int\frac{2}{x+3}\, dx$

Integrate:

$\displaystyle \ln|y|=2\ln|x+3|+C$

Raise both sides to e:

$|y|=e^{2\ln|x+3|+C}$

Simplify:

$|y|=(e^{\ln|x+3|})^2\cdot e^C$

So:

$|y|=C|x+3|^2$

Simplify:

$y=\pm C(x+3)^2=C(x+3)^2$

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3 years ago

You scored a 91 on a test with bonus points. you got 4 bonus points how many points did you score before the bonus points

Alex Ar [27]

You need to subtract the bonus points form the final score: 91-4=87

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3 years ago

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I can't figure out number 7.

Levart [38]

It would take just over 6 minutes assuming it takes him 2. 6 minutes to wax a single square inch somehow.

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3 years ago

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Masja [62]

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Step-by-step explanation:

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-8x+3=8x+27 I need help plz I’m trash at math

belka [17]

Answer:

-1.5

Step-by-step explanation:

<u>See steps below:</u>

-8x+3=8x+27

-8x + 3 - 8x - 3 = 8x+ 27 - 8x - 3 ⇒ add -8x - 3 to both sides in order to collect like terms in the different sides of equation
-16x = 24 ⇒ simplified
x= 24/-16 ⇒ divide
x= - 1.5 ⇒ answer

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3 years ago