<img src="https://tex.z-dn.net/?f=%5Cfrac%7B8%7D%7B3-4x%7D%20%3D%20%5Cfrac%7B5%7D%7B2x%2B.25%7D" id="TexFormula1" title="\frac{8

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bagirrra123 [75]

2 years ago

}{3-4x} = \frac{5}{2x+.25}" alt="\frac{8}{3-4x} = \frac{5}{2x+.25}" align="absmiddle" class="latex-formula">

Mathematics

1 answer:

BlackZzzverrR [31]2 years ago

7 0

Step-by-step explanation:

$\frac{8}{3 - 4x} = \frac{5}{2x + .25} \\ 8(2x + .25) = 5(3 - 4x) \\ 16x + 2 = 15 - 20x \\ 16x + 20x = 15 - 2 \\ 36x = 13 \\ x = \frac{13}{36}$

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Solnce55 [7]

Answer:

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2 years ago

K = mv / 2 solve for m . HELP PLEASE HURRY!

Aleksandr-060686 [28]

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Answer:

m = 2k/v

Step-by-step explanation:

Identify the coefficient of m (v/2) and multiply by its inverse (2/v).

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2k/v = m . . . simplify

m = 2k/v

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Find all the solutions for the equation:

Contact [7]

$2y^2\,\mathrm dx-(x+y)^2\,\mathrm dy=0$

Divide both sides by $x^2\,\mathrm dx$ to get

$2\left(\dfrac yx\right)^2-\left(1+\dfrac yx\right)^2\dfrac{\mathrm dy}{\mathrm dx}=0$

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{2\left(\frac yx\right)^2}{\left(1+\frac yx\right)^2}$

Substitute $v(x)=\dfrac{y(x)}x$ , so that $\dfrac{\mathrm dv(x)}{\mathrm dx}=\dfrac{x\frac{\mathrm dy(x)}{\mathrm dx}-y(x)}{x^2}$ . Then

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$x\dfrac{\mathrm dv}{\mathrm dx}=-\dfrac{v(1+v^2)}{(1+v)^2}$

The remaining ODE is separable. Separating the variables gives

$\dfrac{(1+v)^2}{v(1+v^2)}\,\mathrm dv=-\dfrac{\mathrm dx}x$

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$\implies a=1,b=0,c=2$

Then

$\displaystyle\int\frac{(1+v)^2}{v(1+v^2)}\,\mathrm dv=\int\left(\frac1v+\frac2{v^2+1}\right)\,\mathrm dv=\ln|v|+2\tan^{-1}v$

On the right, we have

$\displaystyle-\int\frac{\mathrm dx}x=-\ln|x|+C$

Solving for $v(x)$ explicitly is unlikely to succeed, so we leave the solution in implicit form,

$\ln|v(x)|+2\tan^{-1}v(x)=-\ln|x|+C$

and finally solve in terms of $y(x)$ by replacing $v(x)=\dfrac{y(x)}x$ :

$\ln\left|\frac{y(x)}x\right|+2\tan^{-1}\dfrac{y(x)}x=-\ln|x|+C$

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3 years ago

Help ASAP will give brainilist

Elenna [48]

It would be: 4 / 2/5

We can re-write it as:

4 * 5/2

= 20/2

= 10

In short, Your Answer would be: 10

Hope this helps!

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