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1 year ago

Write an expression that is equivalent 1/2a-4

Mathematics

1 answer:

dimaraw [331]1 year ago

8 0

Step-by-step explanation:

Answer

a - 8

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The general solution of 2 y ln(x)y' = (y^2 + 4)/x is

Sav [38]

Replace $y'$ with $\dfrac{\mathrm dy}{\mathrm dx}$ to see that this ODE is separable:

$2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}$

Integrate both sides; on the left, set $u=y^2+4$ so that $\mathrm du=2y\,\mathrm dy$ ; on the right, set $v=\ln x$ so that $\mathrm dv=\dfrac{\mathrm dx}x$ . Then

$\displaystyle\int\frac{2y}{y^2+4}\,\mathrm dy=\int\dfrac{\mathrm dx}{x\ln x}\iff\int\frac{\mathrm du}u=\int\dfrac{\mathrm dv}v$

$\implies\ln|u|=\ln|v|+C$

$\implies\ln(y^2+4)=\ln|\ln x|+C$

$\implies y^2+4=e^{\ln|\ln x|+C}$

$\implies y^2=C|\ln x|-4$

$\implies y=\pm\sqrt{C|\ln x|-4}$

4 0

2 years ago

HELP ME PLEASE IM SO LOST

DiKsa [7]

A=10ft because A is 8ft so round that to the nearest ten your answer is 10ft

6 0

3 years ago

Read 2 more answers

Try your best guess, but pls give an explanation!

Rina8888 [55]

Answer:

Step-by-step explanation:

3 0

2 years ago

Solve two sevenths plus seven fourteenths (2 points)

Law Incorporation [45]

Answer:

2/7 + 7/14 = 11/14

Step-by-step explanation:

7 x -2 = -14 Each seventh is going to be worth 2 fourteenths!

This means 2/7 = 4/14

4/14 + 7/14 = 11/14

6 0

2 years ago

Please answer this correctly without making mistakes

lana [24]

Answer:

1 pound 3 ounces

Step-by-step explanation:

Lemme know if it's correct

5 0

3 years ago