Can someone please help me I really need help please help me thank you

x = 45°

Step-by-step explanation:

The sum of the exterior angles of a polygon = 360°

A regular octagon has 8 exterior angles, of which x is one, thus

x = 360° ÷ 8 = 45°

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

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+

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