can you provide a picture please
Answer:
m ∠ABD = 140°
m ∠DBC = 40°
Step-by-step explanation:
∠ (15x - 4) + ∠(5x - 8) = 180°
15x - 4 + 5x - 8 = 180
20x -1 2 = 180
20x = 180 + 12
x = 9.6
m ∠ABD = 15x - 4 = 140°
m ∠DBC = 5x - 8 = 40°
Since you have not presented any choices wherein we can determine the best answer, I will go on and share my thoughts on how she could improve the results of her survey.
Since she just surveyed her ballet class, she should opt for surveying on other classes with other genres. This would entail reliability and validity and eliminate bias about the results.
Answer:
The proof that πk(C1)=πk(C2) of course would just apply the similarity of polygons and the behavior of length and area for changes of scale. This argument does not assume a limit-based theory of length and area, because the theory of length and area for polygons in Euclidean geometry only requires dissections and rigid motions ("cut-and-paste equivalence" or equidecomposability). Any polygonal arc or region can be standardized to an interval or square by a finite number of (area and length preserving) cut-and-paste dissections. Numerical calculations involving the πk, such as ratios of particular lengths or areas, can be understood either as applying to equidecomposability classes of polygons, or the standardizations. In both interpretations, due to the similitude, the results will be the same for C1 and C2.
