Các câu hỏi tương tự
CHUNG MINH
-3x^3-10x^2+2x+8 co nghiem
mong cac ban hay giup do to to xin tran thanh cam on cac ban nhiu lam
-x^3-2x^2+7-(-3x^4+x^3+10x^2-7=?
giai day du cho to nhe to se tick cho cam on cac ban nhiu
sorry cac ban minh viet ko dau mong cac ban thong cam
tim 3 so tu nhien lien tiep, biet tong cac tich tung cap hay ba so ay bang 362
giai chi tiet giup minh, xin cam on
cac ban giup minh lam bai nay nhe
12^25+25^21-21*(2/5*9)/3 chung minh chia het cho 54
giup minh nhe cam on cac ban nhieu
Xin chao cac ban,cac gia su.Hom qua,minh co mot bai toan lop7 chua lam duoc,bay gio da co cau tra loi-cam on ban Lai Tri Dung nhe.Bay gio,minh co mot cau hoi nua,mong moi nguoi chi giup minh a! CHO tam giac ABC can tai A.Ve AH vuong goc voi BC tai H.a)Cho biet AH8cm.Tinh do dai doan thang BH.b)Chung minh rang:tam giac HABt/giac HACc)Goi D la diem nam tren doan thang AH.Tren tia doi cua tia DB lay diem E sao cho DEDB.CMR:AD+DEAC.d)Goi K la diem tren doan thang CD sao cho CK2/3CD.CMR:3 diem H,K,...
Đọc tiếp
Xin chao cac ban,cac gia su.Hom qua,minh co mot bai toan lop7 chua lam duoc,bay gio da co cau tra loi-cam on ban Lai Tri Dung nhe.Bay gio,minh co mot cau hoi nua,mong moi nguoi chi giup minh a!
CHO tam giac ABC can tai A.Ve AH vuong goc voi BC tai H.
a)Cho biet AH=8cm.Tinh do dai doan thang BH.
b)Chung minh rang:tam giac HAB=t/giac HAC
c)Goi D la diem nam tren doan thang AH.Tren tia doi cua tia DB lay diem E sao cho DE=DB.CMR:AD+DE>AC.
d)Goi K la diem tren doan thang CD sao cho CK=2/3CD.CMR:3 diem H,K,E thang hang
Minh mong la co cau tra loi
som nhat. CAM ON NHIEU LAM AAAAAA!
Cho tam giac ABC can tai B ke BH vuong goc AC ( H thuoc AC )
a) Chung minh: HA = HC
b) Ke HD vuong goc AB ( D thuoc AB ), HE vuong goc BC ( E thuoc BC ). Chung minh: HD = HE
c) Chung minh: tam giac BDE can
d) Chung minh: \(BE^2+DH^2=BC^2-HA^2\)
MINH DANG CAN GAP NHO CAC BAN GIUP CHO ( phan a, b, c cac ban co the lam hoac ko thi tuy nhung nho cac ban giup minh phan d )
CAM ON CAC BAN NHIEU
Cac ban cho minh xin de vat ly 1 tiet voi
Minh dang can gap lam
Cam on moi nguoi nhiu!!!!!!!!!!
Viet phan so 4/3 thanh tong cua 5 phan so duong deu co tu bang 1.
Ban nao biet thi giúp minh nhe !!! Minh cam on cac ban nhiu!!!!!!!
cho tam giac ABC goi D la trung diem cua AB tren tia doi cua tia DC lay diem M sao cho DM = DC goi E la trung diem cua AC tren tia doi cua tia EM lay diem N sao cho EN = EM
a) Chung minh AM = AN
b) M;A;N thang hang
c) A la trung diem cua MN
giup minh nhe cac ban minh can gap lam ( ve hinh cho minh luon nha cam on cac ban rat nhiu hihi!! )
nhanh nhanh cac ban oi giup minh di ma