leminhduc cung dung!
thanks vi giai ho bai cho mk
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110.trong phep nhan a.b=c,goi:
m la so du cua a khi chia cho 9,n la so du cua b khi chia het cho 9,r la so du cua tich m.n khi chia cho 9,d la so du cua c khi chia cho 9.
Giup mk nha cac bn!
doi van nghe cua 1 truong co 36 nam va 60 nu ve 1 huyen de bieu dien doi du dinh chia cac to thanh cac to gom ca nam va nu sao cho so nam dc chia deu vao cac to so nu dc chia deu vao cac to (k thua nguoi nao) a)hoi co bao nhieu cach chia to (k ke cach chia thanh 1 to) b)cach chia nao thi so nguoi trong 1 to la it nhat? khi do moi to co bn nguoi?
trong phep nhan a .b = c, goi m la so du cua a khi chia cho 9 n la so du cua b khi chia cho 9 r la so du cua tich m . n khi chia cho 9 , d la so du cua c khi chia cho 9
TRONG PHEP NHAN A. B =C, GOI :
M LA SO DU CUA A KHI CHIA CHO 9 , n LA SO DU CUA b KHI CHIA CHO 9 r LA SO DU CUA TICH m .n KHI CHIA CHO 9, d LA SO DU CUA c KHI CHIA CHO 9
tim so tu nhien a biet a la so tu nhien lon nhat co 3 chu so, chia cho 20,25,30 deu du 15
cac bn giup mk nha mik tích cho
Doi van nghe cua truong co 48 nam va 72 nu ve mot huyen de bieu dien . Muon phuc vu dong thoi tai nhieu dia diem . Doi du dinh chia thanh cac to gom ca nam va nu . So nam va so nu deu duoc chia deu vao cac to . Hoi co the chia duoc nhieu nhat la bao nhieu to ? Moi to co bao nhieu nam ? Bao nhieu nu?
Giai chi tiet ra giup minh nha ! Mink tich cho
Cau 1:
- 2-(9-36)
Cau 2: tim cac so tu nhien n sao cho (2n+9) chia het cho (n+1)
Cau3:goi x la tong cac chu so cua so a =32010+2011, goi y la tong cac chu so cua so x va goi z la tong cac chu so cu y . tim z
cho doan thang AB dai 3 cm.goi c la trung diem cua AB.tren tia doi cua tia BA lay diem D sao cho B la trung diem cua CD
a) so sanh AD va BC
b) goi M la trung diem cua BC.Diem M co phai la trung diem cua doan thang AD khong?? vi sao
Tra loi giup minh nha cac bn
5. Dien de duoc phat bieu dunga)Mot phan duong thang bi chia ra boi diem O cung voi diem O duoc goi la mot ...b)Hinh tao boi diem O va mot phan duong thang chua tat ca cac diem nam cung phia la mot ...c)Neu diem O nam tren duong thang xy thi diem O la goc chung cuad)Hinh gom hai diem ... va tat ca cac diem nam giua ... duoc goi la doan thang RS. Hai diem ... duoc goi la hai mut cua doan thang RS.e)Khi MP+MKPK thi .........f)Diem M la trung diem AB neu M ...... A, B va ..... cach deu ........
Đọc tiếp
5. Dien de duoc phat bieu dung
a)Mot phan duong thang bi chia ra boi diem O cung voi diem O duoc goi la mot ...
b)Hinh tao boi diem O va mot phan duong thang chua tat ca cac diem nam cung phia la mot ...
c)Neu diem O nam tren duong thang xy thi diem O la goc chung cua
d)Hinh gom hai diem ... va tat ca cac diem nam giua ... duoc goi la doan thang RS. Hai diem ... duoc goi la hai mut cua doan thang RS.
e)Khi MP+MK=PK thi .........
f)Diem M la trung diem AB neu M ...... A, B va ..... cach deu ........