Simplify . (24 − 3 ) + (−17 + 8 )

12

Step-by-step explanation:

We can first evaluate the first bracket, getting 21, and evaluate the second bracket, getting -9.

We can then get 21 - 9, getting 12.

geometry: triangles

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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+

25.45584

thats not a system of equations, that is a solution