neu 1/2 cua a bang 2b thi (9/8)a=kb.tim k
neu 1/2 cua a bang 2b thi 9/8a=kb . Vay k bang bao nhieu ?
ta có:a/2=2b =>a=4b
=> (9/8).a=9/8. 4b=36/8 .b =kb
=>k=36/8.b:b=36/8=9/2=4,5
nau \(\frac{1}{2}\) cua a bang 2b thi \(\frac{9}{8}\)a = kb .vay k =
Gia su A va B la hai diem thuoc do thi ham so y=3x+1
a, tung do cua A bang bao nhieu neu hoanh do cua no bang 2/3
b, hoanh do cua B bang bao nhieu neu tung do cua no bang _8
Bạn Nam da co 1 so bai kiem tra mon toan .Nam thay neu them 3 diem 10 va mot diem 9 thi diem trung binh cua minh la 8 .Neu chi duoc them 2 diem 10 va mot diem 9 thi diem trung binh bang 7,5 .Hoi diem trung binh cua Nam hien nay la bai nhieu
so ket mot tuan hoc 3 to cua lop 6a dat duoc nhieu diem gioi neu lay 1/5 so diem gioi cua to 1 chia deu cho 2 to kia thi so diem gioi cua 3 to bang nhau neu to 1 duoc them 8 diem gioi nua thi so diem gioi cua to 1 bang tong so diem gioi cua 2 to kia hoi moi to duoc bao nhoieu diem gioi
trung binh cong cua 2 phan so bang 7/8 neu tang phan so thu 1 len 3 lan thi trung binh cong cua chung bang 17/8 tim phan so thu 2
ghi ro cach giai
ban vao olm.vn/hoi-dap/question/709460.html nhe
good luck!!!!!!!!!
ST1+ST2=7/8*2=7/4
ST1+ST2=17/8*2=17/4
ST1*3+ST2*3=17/4
ST1+ST2=7/4
ST1*2=5/2
ST1=5/2:2=5/4
ST2=7/4-5/4=1/2
chuc ban hoc gioi nha
o 1 nha may co 3 to cong nhan neu lay 20% so cong nhan o to 1 chia deu cho 2 to con lai tyhi so cong nhan o 3 to bang nhau neu to 1 co them 8 cong nhan thi so cong nhan cua to 1 bang tong so cong nhan cua 2 to kia hoi to 1 co ? cong nhan
ta có tất cả số công nhân là:
20x2x8=218
đáp số:218
neu 2007ab la binh phuong cua 1 so thi a+b bang bao nhieu
2 kho co 275 tan thoc neu kho A nhap them 18 tan kho B nhap them 22 tan thi so thoc cua khu A bang 7/8 so thoc cua kho B.Hoi luc dau moi kho co bao nhiêu tan thoc?