\(-\frac{1}{2}<\frac{x}{24}<\frac{y}{12}<\frac{z}{8}\Leftrightarrow-\frac{24}{48}<\frac{2x}{48}<\frac{4y}{48}<\frac{6z}{48}\)
Có thể tìm được rất nhiều các số nguyên x;y;z thỏa mãn
Toán :
Tìm x ;y;z biết
y+x+1/x=x+z+2/y=z+y-3/z=1/x+y+z
Giúp mình nha !
Tìm x biết:
\(\dfrac{5}{x}+\dfrac{y}{4}=\dfrac{1}{8}\)
Tìm các giá trị nguyên của x để \(A=1-\dfrac{3}{\sqrt{x}+1}\)nhận các giá trị nguyên.
Match the nouns from the box with the correct verb.
1. go : ......
2. do : ......
3. collect : ......
4. play : ......
5. watch : ......
6. take : ......
2. cho hình vẽ
biết ax//cy chứng minh rằng góc A+B+C=360 độ
1. cho hình vẽ
biết ax//cy góc A=40 độ , ab⊥bc. tính góc boy?
I.Reorder the sentences to make a dialogue
II.Fill each blank with a correct word
Do you want to be fitter and healthier?Do you like to look younger?Do you want to feel (1)................... relaxed?Then try a few days at a health farm.Health farms are becoming (2)................ of the most popular places (3)............... a short break.I went to Henley Manor for a weekend.It's (4)............... largest helth farm in the country (5)................. it isn't the most expensive.After two days of exercise I (6)................. ten times better.But the best thing for me was the food.It was all very heathy,of (7)....................,but it was excellent,too.
If you're looking for something a (8)...................... cheaper,try a winner break.Winner is the darkest and coldest (9)................ of the year,and it can also be the worst time for your body.We all eat too (10)................. and we don't take enough exercise.A lot of heath farms offer lower prices Monday to Friday form November to March.
Cho :
\(\dfrac{bz-cy}{a}=\dfrac{cx-az}{b}=\dfrac{ay-bx}{c}\)
\(CMR:\dfrac{x}{a}=\dfrac{y}{b}=\dfrac{z}{c}\left(a,b,c\ne\right)\)
giúp mk
