220 people are asked how many siblings they have? # of Siblings Frequency Relative Frequency Cumulative Frequency 0 42 0.1909 42 1 46 0.2091 88 2 54 0.2455 3 37 0.1682 179 4 220 a. Complete the table (Use 4 decimal places when applicable) b. What percent of the people have exactly three siblings? %

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