It is the set of all the elements in the universal set that are not in given set. A. complement B. difference C. entersection D. union

Explanation:

Let's say we had the universal set of all natural numbers {1,2,3,4,...}

Then let's further say that a subset of this is the set of positive even numbers {2,4,6,8,...}

The complement of the second set would be the set of positive odd numbers {1,3,5,7,...} which is the stuff not found in the second set mentioned, but it's found in the universal set. This is one example of the complement of a set.

A. Complement.

Step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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