when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one. Check the picture below.

Step-by-step explanation:
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don't have enough info to state the scale factor
The question seems incomplete, but if you are trying to figure out how much each dress costs, The answer would be $30.
To find the answer all you need to do is;
1. Subtract the price of the jeans ($40) From the total price.
160-40=120
2. Now we know the total price of the Dresses, and we also know she bought 4 of them, this means we can divide the total price ($120) of dresses, by the number (4) of dresses bought.
120/4 = 30.
So therefor, each dress costs $30 Dollars.
Hope this Helps! - Giz
Answer:
Given the sets:
K = {2, 3, 5, 8} and L = {3, 5, 7}
To find the union of K and L i.e, 
Union set defined as the union (denoted by U) of a collection of sets is the set of all elements in the collection.

Therefore, union for the following sets is, {2,3,5,7,8}.
Answer:
Can you send a picture so I can solve it?