Last year in London, I met Tom

He sometimes plays golf on Sundays

The weather is always bad in November

We sometimes have fish for dinner

Peter doesn't usually get up before seven o'clock

1  He sometimes plays golf on sunday.

2  The weather is always bad in november.

3  We sometimes have fish for dinner.

4  Peter doesn't usualy get up before seven o'clock.

1.Mary played the piano while her parents watched Tv

2.She painted a picture while her brother did his homework

3.Jane baked a cake while her has decorated the house

4.They explored the city streets and took photographs all day

5.My sister was playing badminton while my brother is flying his kite

6.Ngoe had an meeting on Wednesday at 9.am

7.Quang read the science book all morning .

Chúc bạn học tốt nhé!

1 Mary was playing piano while her parents were watching TV 

2 She was painting a picture while her brother was doing his homework

3 Jame was baking a cake while her father was decorating the house

4 They were exploring the city streets and taking photographs all day

5 My sister was playing badminton while my brother was flying kite

6 Ngoe was having a meeting at 9 a.m last Wednesday

7 Quang was reading science book all morning

1a

2c

3a

4d

5c

1 A

2 C

3 A

4 D

5 C

I sometime go fishing with my dad.

I go fishing with my dad sometimes.

Sometimes, I go fishing with my dad.

I sometimes go fishing with my dad

I don't sometimes go fishing with my dad

Do you sometimes go fishing with your dad?

Gọi số cần tìm là X

Khi viết thêm chữ số 5 vào phía sau nó thì số mới tạo thành sẽ là \(10\times X+5\)

Số đó tăng thêm 18212 đơn vị nên ta có:

10X+5-X=18212

=>9X=18207

=>X=18207:9=2023

Vậy: Số cần tìm là 2023

Đáp án là 2023 nhé bạn:
Lấy 10x+5 (Tức số ban đàu thêm 5 vào phía sau) -x=18212 r bấm Shilf+Calc (trên máy tính) là được 2023

1: \(x\in B\left(12\right)\)

=>\(x\in\left\{0;12;24;36;48;60;72;...\right\}\)

mà x<=70

nên \(x\in\left\{0;12;24;36;48;60\right\}\)

2: \(x\in B\left(8\right)\)

=>\(x\in\left\{0;8;16;24;32;40;48;56;64;...\right\}\)

mà 12<=x<=50

nên \(x\in\left\{16;24;32;40;48\right\}\)

3: \(x\in B\left(7\right)\)

=>\(x\in\left\{0;7;14;21;28;35;42;49;56;...\right\}\)

mà 16<x<56

nên \(x\in\left\{21;28;35;42;49\right\}\)

4: \(x\in B\left(5\right)\)

=>\(x\in\left\{0;5;10;15;20;25;30;35;40;...\right\}\)

mà 17<=x<=37

nên \(x\in\left\{20;25;30;35\right\}\)

\(2x^2-xy+4x-2y\)

=x(2x-y)+2(2x-y)

=(2x-y)(x+2)