Một số hệ thức lượng về cạnh và đường cao trong tam giác vuông 1.1 Cho tam giác ABC vuông tại A, có AB 15cm; AC 20cm và đường cao AH. Tính
độ dài đoạn thẳng BC và AH.
1.2 Cho tam giác ,ABC biết 7,5,BCcm 4,5,CAcm 6.ABcm
a) Tam giác ABC là tam giác gì ? Tính đường cao AH của tam giác ;ABC
b) Tính độ dài các đoạn ,BH .CH

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

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.