The following stemplot shows the swimming speeds, in kilometers per hour (km/h), for a random sample of 31 emperor penguins. Speed (km/h) 78 834 8 679 900134 9 5 5 6 7 8 8 9 10 0 11 23 10 5 8 8 8 11 0 23 115 Key: 718 = 7.8
(a) The mean of the sample is 9.771 km/h, and the standard deviation is 0.944 km/h. Construct and interpret a 95 percent confidence interval for the mean swimming speed of all emperor penguins in the population.
(b) Can the estimate of the mean swimming speed be generalized to all types of penguins? Explain your reasoning.

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

answer: 4 meters

step-by-step explanation: to you understand 2/3 better you can do 1 divided by 3 = . then multiply that by the 2 which is .66666666666666667 then you would do 6 x .66666666666666667 which is 4.      

hope this .

include a picture of the drawing in order for me to

step-by-step explanation: