cac ban oi?

giai phu minh cau nay voi ! 

co 7 xe nho cho duoc 140 tan hang va 8 xe lon cho duoc 235 tan hang . Hoi trung binh moi xe cho bao nhieu tan hang ?

Sap den tet trung thu roi nen minh do cac ban cau hoi nay .

chi Hang va chu Cuoi co moi quan he gi ?  (OLM dung xoa)

tim cac chu so a;b de:

      ab x aba = abab

     neu giup minh minh se ket ban voi ban 

va neu co cau hoi nao kho cu hoi minh nhe minh, bai de khong lam duoc bai kho lai lam duoc

Ban An phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu = 12, dong thoi chu so hang don vi = trung cong cua chu so hang tram va hang chuc. Hoi ban An tim duoc nhieu nhat may so thoa man yeu cau?

cho so co hai chu so .neu lay so do chia cho hieu chu so hang chuc và hang don vi cua nó thì duoc thuong la 18 va du4.tim so da cho 

giup minh cau này cac ban

ban an phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu bang 12 dong thoi chu so hang don vi bang trung binh cong cua chu so hang tram va hyang chuc hoi ban an tim duoc nhieu nhat bao nhieu so thoa man yeu cau

một công ti xăng dầu nhap ve 3 tau dau moi tau cho 77100l dau sau do phan phoi cho cac cua hang ban le môi cua hang nhan 12850 l dau hoi cong ti phan phoi cho bao nhieu cua hang

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 ti le thuc \(\frac{a}{b}\)=\(\frac{c}{d}\)

chung minh rang\(\frac{a}{b}\)=\(\frac{7a+5c}{7b+5d}\)[b+d khac 0]

cac ban co biet tai sao minh go dau cac chu cai thi chu cai do va dau deu bien mat khong? giup minh voi , cau hoi tren la 1 vi du