Ari, Bobby, and Cathy each went for a walk yesterday afternoon. Ari walked 1, mile at a 2. 1 constant speed of 1, mi /h. Bobby walked 1 1 mi at a constant speed of 1 mi /h. Cathy walked for 1h and 21 min at a constant speed of 1, mi/h List the three people in order of the times they spent walking from least time to greatest time.

geometry: triangles

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lessons

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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

answer by yourhope:

hi! : )

a farmer that lived in ancient egypt would most likely be barried in the sand, in the desert!

: )