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3 years ago

Which of these equations have no solution? Check all that apply.

Mathematics

3 answers:

pogonyaev3 years ago

8 0

Answer: 2(x + 2) + 2 = 2(x + 3) + 1

Steps:

2x + 6 = 2x + 7

Subtract 6 from both sides

2x + 6 - 6 = 2x + 7 - 6

Simplify

2x = 2x + 1

Subtract 2x from both sides

2x - 2x = 2x + 1 - 2x

Simplify

0 = 1

The sides are not equal.

NO SOLUTION

ollegr [7]3 years ago

6 0

Answer:

the first one

Step-by-step explanation:

XxMandy_WolfxX2 years ago

0 0

A B and E!!!! yayay

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Given the Homogeneous equation x^2ydy+xy^2dx=0, use y=ux, u=y/x and dy=udx+xdu to solve the differential equation. Solve for y.

scZoUnD [109]

Answer:

$y=\frac{C}{x}$ .

Step-by-step explanation:

Given homogeneous equation

$x^2ydy+xy^2dx=0$

$\frac{\mathrm{d}y}{\mathrm{d}x}=-\frac{xy^2}{x^2y}$

Substitute y=ux , $u=\frac{y}{x}$

$\frac{\mathrm{d}y}{\mathrm{d}x}=-\frac{y}{x}$

Now,

$u+x\frac{\mathrm{d}u}{\mathrm{d}x}=\frac{\mathrm{d}y}{\mathrm{d}x}$

$u+x\frac{\mathrm{d}u}{\mathrm{d}x}=-u$

$\frac{\mathrm{d}u}{\mathrm{d}x}=-2u$

$\frac{du}{u}=-\frac{dx}{x}$

Integrating both side we get

lnu=-2lnx+lnC

Where lnC= integration constant

$lnu+ln{x}^2=lnC$

$lnux^2=lnC$

Cancel ln on both side

$ux^2=C$

Substitute $u=\frac{y}{x}$

Then we get

xy=C

$y=\frac{C}{x}$ .

Answer: $y=\frac{C}{x}$ .

8 0

3 years ago

The mean temperature for the first 4 days in January was 1°C.

soldier1979 [14.2K]

-4 degrees I think.

5 0

3 years ago

13. What is the highest number of degrees that an angle can have? 180 360 90 270

kykrilka [37]

Answer:

360

Step-by-step explanation: A full angle is 360. 90*4=360.

8 0

3 years ago

Which of the following is a polynomial?

Akimi4 [234]

Answer:

I believe c is the answer.

Step-by-step explanation:

5 0

3 years ago

F(x)=2x+6

mrs_skeptik [129]

Answer:

The Correct option is B. B.-10x^2-48x-54

Therefore the product of f and g. is

$F(x)\times G(x)=-10x^{2}-48x-54$

Step-by-step explanation:

Given:

F(x)=2x+6

G(x)=-5x-9

To Find:

The product of f and g.

F(x) × G(x) = ?

Solution:

The product of f and g.

$F(x)\times G(x)=(2x+6)(-5x-9)$

Applying Distributive Property we get

$F(x)\times G(x)=(2x(-5x-9)+6(-5x-9)\\=-10x^{2}-18x-30x-54\\$

Combining like terms we get

$F(x)\times G(x)=-10x^{2}-48x-54$

Therefore the product of f and g. is

$F(x)\times G(x)=-10x^{2}-48x-54$

7 0

3 years ago

Read 2 more answers