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I want to know how do I find the value of n for number 4.

I Want To Know How Do I Find The Value Of N For Number 4 class=

Sagot :

The values of miles and hours are proportional. Then,

[tex]\frac{45}{4}=\frac{135}{n}[/tex]

To find n, multiply both sides by 4n.

[tex]\begin{gathered} \frac{45\cdot4n}{4}=\frac{135\cdot4n}{n} \\ 45n=540 \end{gathered}[/tex]

Now, divide both sides by 45:

[tex]\begin{gathered} \frac{45n}{45}=\frac{540}{45} \\ n=12 \end{gathered}[/tex]

Answer: n = 12.

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