Hệ có nghiệm \(\left(x;y\right)=\left(2;1\right)\) nên ta có:

\(2k-1=5\\ \Leftrightarrow k=3\)

banh dau do noi dung day

Radioactive pollution is very dangerous. It can cause abnormal growth .(since)

=> Radioactive pollution is very dangerous since it can cause abnormal growth.

2. Acid rain is dangerous. Trees' leaves are damaged. (because of)

=> Because of the dangerous acid rain, trees'leaves are damaged.

3. Tom plans to open another restaurant in Manchester next month.

=> Tom is going to open another restaurant in Manchester next month.

4. The last time Phong visited Tasmania was five years ago.

=> Phong has't visited Tasmania for five years.

1, There 's a big difference between an ordinary radio and a digital radio.

2, Use my credit card to pay to the power or it won't work.

3, Jim spent all his money on playing video games.

4, I lent my new computer game to Daniel and I don't think I'll get it back for a while.

5, Sometimes a simple idea can result in an invention that changes the world.

6, I saw an advertisement with the DVD player we bought last week.

7, There's something wrong on which laptop to get for my dad.

8, You have to connect the computer for a watch that also plays TV programmes.

Chọn A, B, C, D:

1. Listen to what I am saying ..... ?

A. would you B. will you C. donot you D.do you

2. People do not like the way he shows off ... ?

A. do not they B. does he C. do they D. does not he

à, độ dài trung bình ứng vs cạnh AB là 4 cm

10^33= 1000000..000 là 1 số chắn => chia hết cho 2

Chia hết cho 9 thì bạn thiếu đề, tick nhé 

ai lước qua mà ko ticks thì sau này cha mẹ người ko ticks sẽ chết bất đắc kì tử

i/used/look after/younger/brother/sister/when/parents/at/work.

=> I used to look after my younger brother and sister when my parents were at work.

will/you/have/look/house/me/while/i/be/holiday?

=> Will hou have to look after my house for me while I am in holiday ?

mrs.lan/up/order/to/early/this/the/morning/has/in/get/to/meeting/on/get/time/to.

=> Mrs.Lan has to get up early this morning in order to get to the meeting on time.

children/africa/don't/enough/and/to/in/food/eat/warm/have/ to/clothes/wear.

=> Children in Africa don't have enough food to eat and warm clothes to wear.

thank you/much/invite me/speak/your students.

=> Thank you very much for having invited me to speak to your students.

i/be used/get up early/so/not mind/leave/5o'clock/morning.

=> I'm used to getting up early so I don't mind leaving at 5 o'clock in the morning.

phuong/promise/keep/touch/us/while/she/be/hcm city

=> Phuong promised to keep in touch with us while she was in Ho Chi Minh city.

not/have/previous/experience/peter/not have/chance/get/job

=> Not having had any previous experience, Peter doesn't stand a chance of getting that job.

=696936975

ai ko lước qua mà ko tick là c-hó and afterlife parents begging for life