Trang hồ sơ cá nhân- hoidapvietjack.com - Hỏi đáp online nhanh chóng, chính xác và miễn phí

Câu hỏi:

Vẽ đồ thị hàm số y=2/3x+5 và y=-1/2x+5
Tìm toạ độ giao điểm
Giúp mk ik

Câu trả lời của bạn: 18:13 06/07/2023

Phương trình toạ độ giao điểm là

$\frac{2}{3} x + 5 = \frac{- 1}{2} x + 5 < = > x = 0 = > y = 5$

vậy tọa độ giao điểm là (0;5)

Câu hỏi:

timf X

a)175- (42 : X + 95) =3

b)450: (75 - 13x X) =10

Câu trả lời của bạn: 18:12 06/07/2023

a)175- (42 : X + 95) =3

42 : x + 95 = 172

42 : x = 77

x =

$\frac{6}{11}$

Câu hỏi:

$2 x y^{7} : (- 3 x y^{2})$

Câu trả lời của bạn: 18:08 06/07/2023

giải

$2 {xy}^{7} : (- 3 {xy}^{2}) = \frac{- 2}{3} y^{5}$

Câu hỏi:

1. The young usually do things....( enthusiasm/ enthusiastic/ enthusiast/ enthusiastically)
2. The industrial.....( develop/ development/ developing) has made many changes in our country

Câu trả lời của bạn: 09:57 06/07/2023

1enthusiastically

2development

Câu hỏi:

. Chọn đáp án đúng.

1.I completely forgot about this. Give me a moment, I .................. do it now.

B.will B. am going C. is going to

2.Tonight, I .................. stay home. I've rented a video.

A.am going to B. will C. Both A and B

3.I feel dreadful. I .................. sick.

A. am going to be B. will be C. Both A and B

4.If you have any problem, don't worry. I .................. help you.

A. will B. am going to C. Both A and B

5.If I see Mark, I .................. tell him about you.

A. will B. am going to C. Both A and B

6.Where are you going?

A. I am going to see a friend B. I'll see a friend C. I went to a friend

7.That's the phone./ I .................. answer it.

A.will B. am going to C. Both A and B

8.Look at those clouds. It .................. rain now.

A.will B. is going to C. Both A and B

9.Thanks for your offer. But I am OK. Shane .................. help me.

A.is going to B. will C. Both A and B

10.The weather forecast says it .................. rain tomorrow.

A.is going to B. will C. Both A and B

11.Tea or coffee?

A.I’m going to have tea, please. B. I'll have tea, please. C. I want to drink.

Câu trả lời của bạn: 09:37 06/07/2023

1b

2a

Câu hỏi:

Tìm x: 140 : x×4+ $\frac{16}{x}$ +5=12

Câu trả lời của bạn: 09:08 06/07/2023

140 : x×4+

$\frac{16}{x} + 5$ =12

<=>

$\frac{576}{x} = 7 x = \frac{576}{7}$

Câu hỏi:

Giải phương trình x² +9x + 11 = 0

Câu trả lời của bạn: 09:06 06/07/2023

giải

x2 +9x +11=0x2+2.x.92 + 814-374=0(x+92)2=374 => x+92 =372 hoặc x+92 = -372<=> x=-9+372 hoặc x=-9 -372

Câu hỏi:

1. The last time I saw him was 2 years ago
-> I last …………………………………………….
-> It’s ………………………………………………
->I haven’t …………………………………………

2. I started cooking at 3p.m
-> I have ……………………………………………

3. He has never eaten seafood befỏe
-> It’s ……………………………………………….

4. My father stopped smoking last year .
->My father has …………………………………….

5. She last visited Ha Long Bay in 2022.
-> She has …………………………………………..
->It’s …………………………………………..
-> The last time …………………………………………..

Câu trả lời của bạn: 09:00 06/07/2023

1. The last time I saw him was 2 years ago
-> I last …saw him was 2 years ago……………………………………….
-> It’s ……2 years since I last saw him…………………………………………

Câu hỏi:

Cho tam giác ABC cân tại b biết c = 20°. Tính A,B

Câu trả lời của bạn: 08:58 06/07/2023

ABC cân tại B => góc A= góc C =

$20^{0}$

=> góc B =

$180^{0} - 20^{0} - 20^{0} = 140^{0}$

Câu hỏi:

Cho tam giác MNP có MP = pn biết góc b bằng 40 độ tính góc M,N

Câu trả lời của bạn: 08:56 06/07/2023

tam giác MNP có MP =PN nên tam giác MNP cân tại P

nên góc M = góc N = $(180^{o} - 40^{0}) : 2 = 70^{0}$

Câu hỏi:

Most people 1...(never visit) the North Pole, but Parker Wilson has. Last year, Parker 2…(ski) 130 km across the Arctic in freezing temperatures. In the same year, he also 3…(start) a Facebook page about climate change. It's amazing because Parker is only sixteen years old and still 4…(not finish) school-he's a very young adventurer.
5….you …(ever be) to the South Pole? Maybe not, but in 2009, Walter 6...(walk) there and back in twenty days. She was only seventeen years old and she 7…(make) a lot of money for charity.
Parker and Katie 8…(achieve) great things, but they are both still teenagers. 9…they ….(do) too much, too young? Some people think so. Some psychologists say that it's dangerous for teens to take these risks because their brains 10…(not develop) enough. Katie and Parker probably disagree. What do you think?

Câu trả lời của bạn: 08:55 06/07/2023

1 have never visited

2 skied

Câu hỏi:

A Veteran's Story
Anthony Smith is an old-age pensioner from London. He 1…… a life full of adventure. When he was young, he 2….. biology at university. After that, he 3… a pilot and also 4….. as a science correspondent for a newspaper. He 5…. more than thirty books, but he 6…. any films. In January 2012, he 7…. from the Canary Islands to the Bahamas in the Caribbean. He wanted to prove that old people can still have adventures. He 8….alone. Three other old adventurers joined him. He 9….. a lot of money for a charity that provides clean water for people in Africa, Asia and Central America. He 10…. through seventy countries, but he 11…. to the South Pole. He 12…. an interview for our newspaper. You can read it in the next issue.

Câu trả lời của bạn: 08:54 06/07/2023

1 has

2 studied

3 was

4 worked

Câu hỏi:

Viết đường thẳng đi qua 2 điểm A(3;1),B(1;5)

Câu trả lời của bạn: 10:29 03/06/2023

$\underset{AB}{\to} = (- 2; 4) = > \underset{n}{\to} = (4; 2)$

pt đt đi qua 2 điểm AB là: 4(x-3)+2(y-1)=0

<=>2x +y-7=0

Câu hỏi:

$\frac{x}{50}$ -x+ $\frac{10}{55}$ =1

Câu trả lời của bạn: 10:19 03/06/2023

giải

$\frac{x}{50} - x + \frac{10}{55} = 1 \frac{- 49}{50} x = \frac{9}{11} x = \frac{450}{539}$

Câu hỏi:

Giải phương trình; |4x+3|=|2x+5|

Câu trả lời của bạn: 10:17 03/06/2023

|4x+3|=|2x+5|

<=> 4x+3=2x+5 hoặc 4x+3 = -2x-5

<=>x=1 hoặc x =-4

Câu hỏi:

Supply the correct form of the words in the blanks (1pt)
17. My plane wil land at TSN airport at 9PM. Please wait for me at the
gate.
arrive )
18. Do you mind providing us with some
about the tour of Son Doong cave?
19. We were strongly.
by the beauty of Ha Long Bay.
All farmers usually use fertilizers to make their land
(inform)
(attract)
(product)
Supply the correct form of the words in the blanks (1 pt)
15
Congratulations! I was really
that you won the English-speaking contest, Nguyen. ( delight
16.
17.
18.
Bao Phuc flower shop always arranges and shows many beautiful fresh flowers
Son Dong cave has been considered a
Confusingly, the beautiful lady can't give a full
_ attraction in the Central of Viet Nam.
of the robber.
- (attract )
(tour )
(describe )
Supply the correct form of the words in the blanks ( 1.5 pt)
11. My grandparents are
12. Would you mind
that I won the first prize of Toelf Junior Champion.
13. We have been waiting for the
_ your recycled waste in the basement, Nghia?
(delight)
14
15.
The
The old man
of our plane for over one hour
(locate )
16.
_ Institute in Nha Trang was built many years ago.
(arrive)
Look aut. Kids I Stop dimbing up that tree. There is a big bees' nest
(ocean)
the policemen of many important eyewitnesses of the robbery. (inform)
(head)

Câu trả lời của bạn: 10:10 03/06/2023

17 arrival

18 information

Câu hỏi:

People/not send/snail mail/any more/2040.

Câu trả lời của bạn: 10:04 03/06/2023

people will not send snail mail any more in 2040

Câu hỏi:

Mot nen nha hinh chu nhat co chieu dai la 8 m,chieu rong bang 3/4 chieu dai

Câu trả lời của bạn: 09:56 03/06/2023

chiều rộng là: 8x 3 :4=6(m)

Câu hỏi:

It is said that many people ha e been homeless because of the flood
->many people
Brain doesn’t play sports and he doesn’t watch them on Tv
->brain neither
Tim is woking for this company and so carol
->both
Giúp tui với🥺

Câu trả lời của bạn: 09:51 03/06/2023

It is said that many people have been homeless because of the flood
->many people are said to have been homeless because of the flood

Câu hỏi:

Trong mặt phẳng (Oxy) Cho điểm A(0; 1) và B(1;5)Lập phương trình đường tròn đường kính AB.

Câu trả lời của bạn: 09:48 03/06/2023

gọi O là trung điểm AB=> O(1;2)

AB= $\sqrt{17}$

bán kính R=AB:2= $\frac{\sqrt{17}}{2}$

pt đường tròn đk AB là: ${(x - 1)}^{2} + {(y - 2)}^{2} = \frac{17}{4}$

Nguyễn Trang