giúp mình với ạa 1. Michael said to Mark, “Don

NH

Nguyễn Hải Mai

22 tháng 4 2020

Đọc tiếp

#Tiếng anh lớp 9

0

NH

Nghiêm Hạ Băng

22 tháng 7 2021

1. "Shut up, everybody!" said the teacher.2. "Open the window, Robert," said Jane.3. "Phone your granny," she told him.4. "Don't be late," she warned him.5. "Don't talk to strangers, Michael," said his mother.6. "Don't listen to a word he says," she told me.7. "Clare, help me clean up the kitchen," said Tony.8. "Fiona, get out of my way," said Alastair.9. "Boys! Stay away from the dog when he's...

Đọc tiếp

#Tiếng anh lớp 7

2

DT

Đỗ Thanh Hải

CTVVIP

22 tháng 7 2021

The teacher told everybody to shut up

Jane told Robert to open the window

She told him to phone his granny

She warned him not to be late

His mother told Micheal not to talk to the strangers

She told me not to listen to a work he says

Tony told Clare to help him clean up the kitchen

Alastair told Fiona to get out of his way

Dad told the boys to stay away from the dog when he was eating

Bob told Minne not to scratch the sofa

The teacher told Carlaf not to pick his nose in class

My father told me to look after my sister

The actor told Oliver to break a leg

Đúng(2)

KY

Khinh Yên

22 tháng 7 2021

refer

"Shut up, everybody!" said the teacher.
1The teacher told everybody to shut up.

	"Open the window, Robert," said Jane.
2	Jane told Robert to open the window.

	"Phone your granny," she told him.
3	She told him to phone his granny.

	"Don't be late," she warned him.
4	She warned him not to be late.

	"Don't talk to strangers, Michael," warned Mrs Simpson.
5	Mrs Simpson warned Michael not to talk to strangers.

	"Don't listen to a word he says," she told me.
6	She told him not to listen to a word he said.

	"Clare, help me clean up the kitchen," said Tony.
7	Tony told Clare to help him clean up the kitchen.

	"Fiona, get out of my way," said Alistair.
8	Alistair told Fiona to get out of his way.

	"Boys! Stay away from the dog when he's eating," said Dad.
9	Dad told the boys to stay away from the dog when he was eating.

	"Minnie, don't scratch the sofa," said Bob.
10	Bob told Minnie not to scratch the sofa.

	"Carla, don't pick your nose in class," said the teacher.
11	The teacher told Carla not to pick her nose in class.

	"Look after your sister, Michael," said Sam.
12	Sam told Michael to look after his sister.

	"Break a leg, Oliver," said the actor.
13	The actor told Oliver to break a leg.

Đúng(0)

S2

sunny 2408

16 tháng 10 2021

MN GIÚP MÌNH VỚI Ạ , MAI MÌNH KIỂM TRA RỒI Ạ 1. "Don't play with these matches!"→ My father warned me ...2. "I'm leaving here tomorrow."→He said that ...3. "Perhaps we can go to Paris for the weekend."→ He suggested4. "My sister got married last year."→ He told me that ....5. "What are you doing tomorrow?"→ My friend ask me.6. "Have you ever worker in London before?"→ My boss wanted to know...7. "We went out last night.“→ My brothers said that...

Đọc tiếp

#Tiếng anh lớp 9

1

DT

Đỗ Thanh Hải

CTVVIP

16 tháng 10 2021

1. "Don't play with these matches!"
→ My father warned me .not to play with those matches..

2. "I'm leaving here tomorrow."
→He said that ...he was leaving there the day after

3. "Perhaps we can go to Paris for the weekend."
→ He suggested going to Paris for the weekend

4. "My sister got married last year."
→ He told me that ....his sister had got married the year before

5. "What are you doing tomorrow?"
→ My friend ask me. what I was doing the day after

6. "Have you ever worker in London before?"
→ My boss wanted to know...if I had ever worked in London before

7. "We went out last night.“
→ My brothers said that ...they had gone out the night before

8. "I was waiting for the bus when he arrived."
→ He said to me that ...he was waiting for the bus when he had arrived

9. "Don't make a mess!"
→ My mother requested us not to make a mess

10. "You should stay in bed if you feel unwell."
→ The nurse advised me to stay in bed if I felt unwell

Đúng(0)

HL

Hà Linh Nguyễn

17 tháng 8 2021

giúp mình bài 1 và 2 với ạa

#Hóa học lớp 8

1

NT

Nguyễn Trần Thành Đạt

17 tháng 8 2021

Em đăng tách bài nha 1-2 bài/1 lần hỏi

Đúng(0)

DT

Đào thị quỳnh

4 tháng 7 2018

1. I got good mark once, but I don't have anymore

I .............................................

2. His sister said, '' I don't buy this book''

His sister said .................................................

3. They said, '' We have to try our best to win the match''

They told me ......................................

#Tiếng anh lớp 7

2

AT

Aki Tsuki

4 tháng 7 2018

1. I got good mark once, but I don't have anymore

I used to have a good mark

2. His sister said, '' I don't buy this book''

His sister said that she đin't buy that book

3. They said, '' We have to try our best to win the match''

They told me they had to try them best to win the match

Đúng(0)

LH

LÊ HUỲNH BẢO NGỌC

4 tháng 7 2018

1, I got good mark once , but I don't have anymore .

\(\rightarrow\) I used to get good mark .

2, His sister said , '' I don't buy this book ''

\(\rightarrow\) His sister said that he didn't buy this book .

3, They said , '' We have to try our best to win the match ''

\(\rightarrow\) They told me that they had to try their best to win the match .

Đúng(0)

M

MTaam

6 tháng 12 2023

giải giúp mình với ạa , mình cảm ơn.

#Toán lớp 9

1

NN

Nguyễn Ngọc Anh Minh

VIP

7 tháng 12 2023

Xét tg ABO và tg ACO có

AO chung

AB=AC (gt)

OB=OC=R

=> tg ABO = tg ACO (c.c.c)

\(\Rightarrow\widehat{ACO}=\widehat{ABO}=90^o\Rightarrow AC\perp OC\) => AC là tiếp tuyến với (O)

b/

Xét tg vuông EOI và tg vuông COI có

OE=OC=R; OI chung => tg EOI = tg COI (hai tg vuông có 2 cạnh góc vuông bằng nhau)

Xét tg vuông EDI và tg vuông CDI có

DI chung

tg EOI = tg COI (cmt) => IE=IC

=> tg EDI = tg CDI (hai tg vuông có 2 cạnh góc vuông bằng nhau)

Xét tg DEO và tg DCO có

DO chung

OE=OC=R

tg EDI = tg CDI (cmt) => DE=DC

=> tg DEO = tg DCO (c.c.c)

\(\Rightarrow\widehat{DEO}=\widehat{DCO}=90^o\Rightarrow DE\perp OE\) => DE là tiếp tuyến với (O, R)

Đúng(1)

M

MTaam

7 tháng 12 2023

giải giúp mình với ạa , mình cảm ơn.

#Toán lớp 9

1

NL

Nguyễn Lê Phước Thịnh

7 tháng 12 2023

a: ΔOBC cân tại O

mà OA là đường cao

nên OA là phân giác của góc BOC

Xét ΔOBA và ΔOCA có

OB=OC

\(\widehat{BOA}=\widehat{COA}\)

OA chung

Do đó: ΔOBA=ΔOCA

=>\(\widehat{OBA}=\widehat{OCA}=90^0\)

=>AC là tiếp tuyến của (O)

b: Ta có: \(\widehat{KOA}+\widehat{BOA}=\widehat{KOB}=90^0\)

\(\widehat{KAO}+\widehat{COA}=90^0\)(ΔOCA vuông tại C)

mà \(\widehat{BOA}=\widehat{COA}\)

nên \(\widehat{KOA}=\widehat{KAO}\)

=>KA=KO

d: Xét (O) có

\(\widehat{ACI}\) là góc tạo bởi tiếp tuyến CA và dây cung CI

\(\widehat{CDI}\) là góc nội tiếp chắn cung CI

Do đó: \(\widehat{ACI}=\widehat{CDI}\)

ΔOCA vuông tại C

=>\(CO^2+CA^2=OA^2\)

=>\(CA^2=\left(2R\right)^2-R^2=3R^2\)

=>\(CA=R\sqrt{3}\)

Xét ΔACI và ΔADC có

\(\widehat{ACI}=\widehat{ADC}\)

\(\widehat{CAI}\) chung

Do đó: ΔACI đồng dạng với ΔADC

=>\(\dfrac{AC}{AI}=\dfrac{AD}{AC}\)

=>\(AI\cdot AD=AC^2=\left(R\sqrt{3}\right)^2=3R^2\) không đổi

Đúng(1)

TA

tue anh le

26 tháng 11 2021

mng giúp mình với ạa

#Toán lớp 8

0

NA

Ngọc Anh

24 tháng 10 2023

mn giúp mình với ạa

#Toán lớp 8

1

KT

『Kuroba ム Tsuki Ryoo ︵²ᵏ⁷』

24 tháng 10 2023

`#3107.101107`

2.

a)

`(x - 2y)^2 = x^2 - 2*x*2y + (2y)^2 = x^2 - 4xy + 4y^2`

`=> -2xy -> -4xy`

b)

`(4a + 3b)^2 = (4a)^2 + 2*4a*3b + (3b)^2 = 16a^2 + 24ab + 9b^2`

`=>` `a^2 -> 16a^2`; `b^2 -> 9b^2`

c)

`9x^2 + 6xy + y^2 = (3x)^2 + 2*3x*y + y^2 = (3x + y)^2`

`=>` `(3x - y)^2 -> (3x + y)^2`

d)

`(a - 2b)^3 = a^3 - 3*a^2*2b + 3*a*(2b)^2 - (2b)^3 = a^3 - 6a^2b + 12ab^2 - 8b^3`

`=>` `-8a^2b -> -6a^2b`; `6ab^2 -> 12ab^2.`

Đúng(3)

KT

『Kuroba ム Tsuki Ryoo ︵²ᵏ⁷』

24 tháng 10 2023

Sử dụng các HĐT:

1) \(\left(A+B\right)^2=A^2+2AB+B^2\)

2) \(\left(A-B\right)^2=A^2-2AB+B^2\)

3) \(\left(A-B\right)^3=A^3-3A^2B+3AB^2-B^3\)

Làm bài này bạn chú ý cả 2 vế xem có phân tích được ra HĐT hoặc chỉnh ntnao cho đúng vs HĐT nha :v.

Đúng(1)

NA

Ngọc Anh

15 tháng 10 2023

mn giúp mình với ạa

#Tiếng anh lớp 8

1

SV

Sinh Viên NEU

CTVVIP

15 tháng 10 2023

1 What is the largest group of 54 ethnic groups of VN?

2 Why is this dish called five-coloured sticky rice?

3 How many ethnic groups are there in VN?

4 Who wear a V-shaped front collar T-shirt?

5 Where do the Dao live mainly ?

Đúng(1)

Chúng tôi đề xuất

Tài nguyên

Ứng dụng mobile

Bảng xếp hạng

Các khóa học có thể bạn quan tâm

Yêu cầu VIP