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3 years ago

How do you Solve the proportion 4/n = 4/5

Mathematics

2 answers:

Allisa [31]3 years ago

8 0

Answer:

4/n=4/5

4n = 4×5

4n = 20

n = 20/4

n=5

Sedaia [141]3 years ago

5 0

Answer:n=5

Step-by-step explanation:

4/n=4/5 then cross multiplication

4×n and 4×5

Then you have 4×n=4n and 4×5=20

Then divide 4 everywhere so you could find n

4n/4 and 20/4

N=5

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3 years ago

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Temka [501]

The particular quadratic solution to the ODE is found as follows:

$x=at^2+bt+c$
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$(2at+b)+2(at^2+bt+c)=t^2+4t+7$
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$\begin{cases}2a=1\\2(a+b)=4\\b+2c=7\end{cases}\implies a=\dfrac12,b=\dfrac32,c=\dfrac{11}4$

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$x'+2x=0\implies r+2=0\implies r=-2$

so that $x_c=Ce^{-2t}$ is a characteristic solution to the ODE, and the general solution would be

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4 years ago