Cửa hàng đã bán :

`104xx1/4=26(kg)`

Còn lại :

`104-26=78(kg)`

`a)18^0<20^0<75^0<100^0<124^0<141^0<180^0`

`b)` Góc nhọn `:18^0;20^0;75^0`

Góc tù `:100^0;124^0;141^0`

Góc bẹt `180^0`

đã đũ GP đâu nhỉ =))? 

\(\left(a+b+c\right)^3\\ =\left(\left(a+b\right)+c\right)^3\\ =\left(a+b\right)^3+c^3+3\left(a+b\right)c\left(a+b+c\right)\\ =a^3+b^3+3\left(a+b\right)\left(ab+c\left(a+b+c\right)\right)\\ =a^3+b^3+c^3+3\left(a+b\right)\left(b+c\right)\left(a+c\right)\)

`=>đpcm`

=))) đau ra `2` TH v ?

`4:x=3/8+1*1/2`

`4:x=3/8+1/2`

`4:x=7/8`

`x=4:7/8`

`x=32/7`

\(\dfrac{3}{4}=\dfrac{9}{12};\dfrac{5}{6}=\dfrac{10}{12};\dfrac{1}{2}=\dfrac{6}{12};\dfrac{4}{3}=\dfrac{16}{12}\\ v\text{ì}\dfrac{.6}{12}< \dfrac{9}{12}< \dfrac{10}{12}< \dfrac{16}{12}\\ \Rightarrow\dfrac{1}{2}< \dfrac{3}{4}< \dfrac{5}{6}< \dfrac{4}{3}\)

TvT ràu đăng kí xong ms thấy mik ngu