Water consumption by the residents in a local community is normally distributed, with a mean of 340 gallons per day. Ninety-five percent of the residents use between 200 and 480 gallons per day. What is the standard deviation of water consumption in the population in gallons per day? Group of answer choices 70 140 35 280 Flag question: Question 5

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

mnkjn

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