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scoray [572]
3 years ago
7

What is the length of DE?? Thx :)

Mathematics
1 answer:
Alex3 years ago
7 0

Answer:

10

Step-by-step explanation:

Your scale factor is 3/2, because when you compare AC and DF, the ration is 18/12, or 3/2. We can set up a proportion:

3/2=15/x

We cross multiplu

3x=30

x=10

So, the length of DE is 10 units.

Hope this helps!

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lapo4ka [179]
First we must construct an equation to model the problem. (In this case we will use an inequality instead) This is what I came up with:
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4 0
3 years ago
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