What is the mean of the data set [3, 2, 2, 12, 6, 5, 14, 4]?

a: 2
b: 4
c: 6
d: 7

The answer is C. 6

Step-by-step explanation:

To find the mean you add all the numbers up then divide by how many numbers you added together

3+2+2+12+6+5+14+4= 48

48/8= 6

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

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