Marty has $80 to spend at a sporting goods store .he will spend $56 on a shirt and then bout some darts . each box of darts costs $6 . he wants to boy as many boxes as possible. which equation shows how to find the number of boxes of darts ,x, he can buy? a. 80=56+6x b.80=56 6x c.80=(56)(6x) d.80=56/6x choose one and state why it’s correct

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+

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