Janelle is training for a marathon. Her weekly mileage for the last eight weeks of training is shown below. 30, 40, 41, 33, 45, 50, 34, 50

This week, she runs a total of 9 miles before suffering a minor injury and taking the rest of the week off. Select the true statement about the effect of this week's mileage on Janelle's weekly mileage distribution.

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

1.30

step-by-step explanation: