cho 2 phan so co tong bang -3 va tich bang 12/5 tinh tong cac so ngich dao cua 2 phan so
Cho 2 phan so co tong bang -3 va tich bang 12/5. Tinh tong cac so nghich dao cua 2 phan so do
Muon do be tong, nguoi ta tron 1 ta xi mang,2 ta cat, va 6 ta soi
a)tinh ti so phan tramtung thanh phan cua be tong
b)dung bieu do o vuong bieu dien cac ti so phan tram do
1.cho hai phan so co tong bang -3 va tich bang 12/5. tinh tong cac nghich daao cua hai phan so do
2.cho hai phan so toi gian a/b va c/d. biet a/b+c/d E z. chung minh /b/=/d/
3/2.5+3/5.8+3/8.11+....+3/...?
Tinh phan ...? biet rang khoang cach o giua la 10 so
Va cho biet qui luat(y la cong thuc) de tinh phan...?
va tinh tong
cho 2 goc aob va boc co tong la 76 do biet 2 phan 3 goc nay = 5 phan 2 goc kia tinh goc aob boc
so lieu cua ngang giao duc va dao tao nam hoc 1998-1999 cho biet :Ca nuoc ta co 5564888 hs THCS,trng doco 2968868 hs nam.DUng may tinh bo tui de tinh ti so phan tram cua hs nam va cua so hs nu so voi tong so hs THCS
tinh ti so phan tram cua 2 so
a)5 va 8
Ve 2 duong tron (A; 1cm ) va (B;2cm)cat nhau tai C va D. Duong tron tam A cat AB tai I .
a, cho biet do dai cac doan thang: AC BC AI AB?
b, I co phai la trung diem cua doan thang AB khong? Vi sao? Tinh IB?
