Minh biet day la cau hoi khong lien quan den toan, nhung cac bn giup nha
1, Trong cac vat sau day, vat nao co the coi la guong cau lom?
A, Pha den pin
B, Mat nuoc cua cai thia inoc
C, Mat tren cua cai chao danh bong
D, Ca ba vat deu duoc.
2, Dat mot vat sang AB o phia truoc, gan sat voi guong cau lom, cho anh A' B'. So sanh kich thuoc cua AB voi A'B'
A, AB>A'B'
B, AB<A'B'
C, AB=A'B'
D, Co the A hoac B hoac C
Ai nhanh, ai dung, mik tick.
Ai tra loi cau hoi nay thi nho kb voi mik nha
Mot nguoi luc si di qua mot cay cau cam them 3 qua ta ,moi qua nang 1 tan va tren cau gan bien bao la cau chi cho vat co can nang tu 2 tan tro xuong . hoi lam sao ma nguoi do qua cau duoc
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!
trong dot kiem tra cong nhan lien doi xuat sac cap tinh tai mot truong trung hoc co so, co 45 doi vien duoc moi tham gia tra loi cau hoi(moi doi vien phai tra loi mot cau). ket qua kiem tra co 2 doi vien dat diem 10, khong co doi vien nao duoi diem 2(diem kiem tra la mot so tu nhien tu 0 den 10). Hay chung minh co it nhat 6 doi vien bang diem nhau
Chao cac gia su va cac ban.Minh co 1bai toan chua lam duoc.Nhu lan truoc,minh da dat cau hoi ve hinh hoc.Lan nay minh xin dat mot cau nua,mong moi nguoi giup minh bai toan nay :
Cho tam giac ABC vuong tai A,co goc B =60 do.
a, Tinh so do goc C va so sanh do dai 3canh cua tam giac ABC
b,Ve BD la tia phan giac cua goc ABC(D thuoc AC).Qua D ve DK vuong goc voi BC(K thuoc BC) .Chung minh:tam giac BAD=tam giac BKD
c,C/minh :tam giac BDC can va K la trung diem BC
d,Tia KD cat BA tai I.Tinh do dai canh ID biet AB=3cm(lam tron ket qua den chu so thap phan thu nhat).
Neu ai, gia su co the tra loi duoc cau hoi nay thi xin nhan tin lai cho minh a.Minh xin cam on nhieuuuuuuuu(ve hinh nua nhe! )
co ban nao muon kb voi minh ko
va bay gio mik giao cho 1 cau ?
co ai ham mo khoi my không nao
va cac ban hay cha loi cau nay
1 cau be di ra cong vien choi
gap 1 ba cu cau be lay chiec dep nhem
vao ba cu hoi cau be mat hai thu do la
nhung thu gi cac ban thu doan xem ai
tra loi dung dau tien mik tich cho nhanh len
cho4 so ko am a,b;c;d thoa man a+b+c+d=1 . Goi S la tong cac tri tuyet doi cua hieu tung cap so co duoc tu 4 so nay. S co the dat gia tri lon nhat la bao nhieu ?
xin loi cac ban vi cau hoi cua minh ko co dau nen hoi kho hieu mong cac ban giup do nha thankyou
Xin chao moi nguoi,cac gia su. MINH CO MOT BAI TOAN LOP7 CHUA LAM DUOC,XIN MOI NGUOI GIANG DAY: Cho biet tam giac AMN vuong tai A,co AM<AN. a)Cho biet tam giac AM=12cm,MN=37cm.Tinh do dai canh AN va so sanh cac goc trong tam giac AMN.
b)Goi I la trung diem cua AN.Tu diem I ve duong thang vuong goc voi AH tai I,duong thang nay cat MN tai diem B.Chung minh tam giac ABI=t/giac NBI
c)Tren tia doi cua tia BA lay diem C sao choBC =BA,CI cat MN tai D.C/minh MN=3ND
Minh xin moi nguoi chi giup, hay lien he voi minh khi ban co cau tra loi gan nhat .Xin cam on(moi nguoi ve hinh luon a!)
1. Trong thuc te, khi dem hay do cac dai luong, ta thuong chi duoc cac so gan dung. De co nhieu kha nang thu duoc ket qua co nhieu kh nang sat so dung nhat, ta thuong phai dem hay do nhieu lan roi tinh trung binh cong cua cacso gan dung tim duoc.
Hay tim gia tri co nhieu kha nang sat so dung nhat cua so do chieu dai lop hoc cua em sau khi do nam lan chieu dai ay.