Humpty Dumpty is sitting on top of an 8-feet wall. Alice is on the ground running toward him at a rate of 2.5 meters per second. How fast is the distance between
Alice and Humpty Dumpty changing when she is 7 meters from the bottom of the wall?

your answer is b ^w^ hope i

c

step-by-step explanation:

i think because what else can be a sample of every member

geometry: triangles

solvers

lessons

answers archive

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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