7 A statistician noted the population of her country in three different years.
5

1900: 4.6 million
1950: 7.2 million
2000:13.8 million
Find the percentage increase:

a)from 1900 to 1950

b)from 1950 to 2000
2000: 13.8 million

c)from 1900 to 2000.
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4 puzzles in 3 hours

step-by-step explanation:

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

id

step-by-step explanation:

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i know the way

and

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idk what the heck he answer is, i’m just putting this here so i finish my account