Answer:Answer:
They are proportions, see explanation.
Explanation:
First, set them both equal to each other.
You can use the fact that two ratios form a proportion if simplified form of both the ratios comes out as same ratio.
Yes, the ratio 18/9 and 2/1 form a proportion.
Two ratios form a proportion if simplified form of both the ratios comes out as same ratio.
To simplify a ratio, try finding a number(integer other than 1),such that both the numerator(upper sided number in ratio) and the denominator(lower sided number) get divided fully(no remainder).
The given ratio is 18/9
We see that we can divide both numerator and denominator by 9, thus
[tex]\dfrac{18}{9} = \dfrac{18/9}{9/9} = \dfrac{2}{1}[/tex]
The given ratio is 2/1
There is no integer common in them except 1, thus it is already simplified.
Since both the ratios when simplified are same 2/1, thus, both form a proportion.
We can write it as:
[tex]18:9 :: 2:1[/tex]
Learn more about ratio and proportion here:
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