1 year ago

Algebra 1

Mathematics

1 answer:

Harlamova29_29 [7]1 year ago

4 0

Answer:

cl jsjsjsjnsmamansnsnannananann

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A table titled Text messages sent has 25 entries.

Studentka2010 [4]

This is uselful! Thanks: ))

5 0

2 years ago

X-5.47753/0.06776<br> Solve for x

Dmitrij [34]

Answer:

80.83722

Step-by-step explanation:

−5.47753 /0.06776 =−80.83722

x-80.83722

+80.83722 on both

x=80.83722

3 0

2 years ago

WILL MARK YOU BRAINLIEST!!!!

FrozenT [24]

(4x+2)=(5x-25)

4x-5x=-25-2

-x=-27

x-27

4 0

3 years ago

Read 2 more answers

Bernoulli differential equation... y'+xy=xy^2

snow_lady [41]

$y'+xy=xy^2\implies y^{-2}y'+xy^{-1}=x$

Let $z=y^{-1}$ , so that $z'=-y^{-2}y'$ . Then the ODE becomes linear in $z$ with

$-z'+xz=x\implies z'-xz=-x$

Find an integrating factor:

$\mu(x)=\exp\left(\displaystyle\int-x\,\mathrm dx\right)=e^{-x^2/2}$

Multiply both sides of the ODE by $\mu$ :

$e^{-x^2/2}z'-xe^{-x^2/2}z=-xe^{-x^2/2}$

The left side can be consolidated as a derivative:

$\left(e^{-x^2/2}z\right)'=-xe^{-x^2/2}$

Integrate both sides with respect to $x$ to get

$e^{-x^2/2}z=e^{x^2/2}+C$

where the right side can be computed with a simple substitution. Then

$z=1+Ce^{x^2/2}$

Back-substitute to solve for $y$ .

$y^{-1}=1+Ce^{x^2/2}\implies y=\dfrac1{1+Ce^{x^2/2}}$

3 0

2 years ago

There are about 48,000 farms in Nebraska using approximately 45 million acres of land . This farmland covers about 9/10( nine te

Afina-wow [57]

Remark

Very interesting fact. Thanks for posting. 1/10 of the state is not farm land because 9/10 is.

Solution

The entire state of Nebraska is 45,000,000 acres of land

1/10 of that is 1/10 * 45,000,000 acres = 4,500,000 acres. <<< Answer

7 0

3 years ago