Cho tam giác ABC vuông tại a đường cao AH a) Cho AB=6,AC=8.Tính BC ,AH ,BH

b) Lấy K thuộc AC, kẻ AD vuông góc với BK .Chứng minh Tam giác BHK đồng dạng với Tam giác BDC

c) chứng minh BD²/AB²=BH . DC /HK .BK

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a.ab=bc b.bc=xy c.ab=wx d.