Sắp xếp các số sau theo thứ tự tăng dần:

a)\(-10;2\frac{3}{4};-\sqrt{\frac{9}{4};}2,\left(75\right);\sqrt{10}\)

b) \(0;-1,8;3\frac{3}{4};-\sqrt{\frac{16}{25};}3,\left(75\right);\sqrt{17}\)

Cho hình vẽ biết: \(a\perp c;b\perp c\) và \(\frac{y}{5}=\frac{y}{4}\). Tính x, y?

Fill in the blank with the correct linking word.

1. He didn't study, ... he failed the history exam

2. My mother usually gets home at 5 p.m, ... then she cooked dinner

3. I was late for class this morning ... the bus was late

4. We went to Jane's house, ... she was ou

5. We can go to the pool, ... we can go horse-riding, which ever you prefer

6. She is studying very hard ... she wants to be a doctor

7. Carol studied hard for the maths test, ... she couldn't get a good mark

8. The floor was wet and slippery, ... Manson almost fell

9. We went to the nursing home, ... we talked and sang for the elderly

Tìm x, y biết:

a) 4x = 7y = 3z và x + y + z = 61

b) 3x = 7y và \(x^2-y^2=160\)

c) 6x = 5y; 7y = 8z và x + y - z = 138

d) \(\frac{1}{2}x=\frac{2}{3}y=\frac{3}{4}z\) và y - x + z = 15