Cho tam giác ABC cân AB = AC trên cạnh AB lấy điểm D trên cạnh AC lấy điểm E Sao cho AD = Ae Chứng minh BE = CD. chứng minh Góc ABC = góc acd Gọi K là giao điểm của Be và CD tam giác ABC là tam giác gì Vì sao gọi M là giao điểm hai phân giác góc ngoài tại đỉnh B

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

Solve 13 + w/7= -18 (w/7 is a fraction)

There are 2 ones, 1 five,3tens, and 1 twenty. if there are 28 bills in her wallet, what would you predict is the approximate value of all the bills