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24 tháng 8 2019

There are 18 students have neither a dog or a cat

_ Study well _

12 tháng 2 2017

goi so hoc sinh chi co cho la:a

goi so hoc sinh chi co meo la:b

Theo bai ra, ta co:

\(\left\{\begin{matrix}a+19=52\\b+19=31\end{matrix}\right.\Leftrightarrow\left\{\begin{matrix}a=33\\b=12\end{matrix}\right.\)

\(\Rightarrow\)so hoc sinh co cho hoac meo hoac ca hai la: 33+12+19=64

so hoc sinh khong co ca cho lan meo la: 120-64=56(hs)

neu minh sai cho nao thi ban noi cho minh biet nhahaha

5 tháng 4 2016

37 students

6 tháng 5 2016

56

18 tháng 8 2016

ban co the giai ki hon duoc ko

16 tháng 2 2017

56

16 tháng 2 2017

56

toan quoc te nhaQuestion 1:There are two parallel lines in the figure. What is the value of x?  Answer: x = Question 2:ABC and RTS are similar triangles.The value of x is Question 3:If x<0 and 5x+8+|3x|=0 then x=Question 4:I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?Answer: Question 5:How many triples of integers (a,b,c) are there such that  ? Answer:  triples.Question 6:Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a...
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toan quoc te nha

Question 1:
There are two parallel lines in the figure. What is the value of x? 

 Answer: x = 

Question 2:


ABC and RTS are similar triangles.
The value of x is 

Question 3:
If x<0 and 5x+8+|3x|=0 then x=

Question 4:
I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?

Answer: 

Question 5:
How many triples of integers (a,b,c) are there such that 
 ? 
Answer:  triples.

Question 6:
Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a cat. Twenty students have a dog and 24 students have a cat. 
How many students have both a dog and a cat?
Answer:  students.

Question 7:
The sum of 2 positive integer numbers is greater than their product if the smaller number is 

Question 8:
How many different real numbers satisfy the following equation?
 
Answer: 

Question 9:
The area of trapezoid ABCD is 180   .The altitude is 8 cm,AD is 10 cm,and BC is 17 cm.
What is AB,in centimeters?

Answer:  cm.

Question 10:
There are 115 cars in a village of 26 families. Each family has either 4 or 5 cars. 
How many families have 4 cars? 
 Answer:  families.

0
D
datcoder
CTVVIP
17 tháng 11 2023

Bài tham khảo

A: I think most of them own a computer.

B:  I agree. And I think some of them download music.

A: Yes, and very few of them don't have a smartphone nowadays.

B: That's true. I also think some of them shop online, but not all of them.

A: And I don't think none of them have a YouTube channel. Maybe a few of them do.

Tạm dịch

A: Tôi nghĩ hầu hết họ đều sở hữu một chiếc máy tính.

B: Tôi đồng ý. Và tôi nghĩ một số trong số họ tải nhạc.

A: Đúng vậy, và rất ít người trong số họ không có điện thoại thông minh ngày nay.

B: Đúng vậy. Tôi cũng nghĩ rằng một số người trong số họ mua sắm trực tuyến, nhưng không phải tất cả.

A: Và tôi không nghĩ là không ai trong số họ có kênh YouTube. Có lẽ một vài trong số họ thì có.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.The Internet has truly transformed how students do their homework. (31)______ homework today still means spending time in the library, it’s for a different reason. Rather than using books for research, students today are (32)______ to the Internet to download enormous amounts of data available online.In the past,...
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

The Internet has truly transformed how students do their homework. (31)______ homework today still means spending time in the library, it’s for a different reason. Rather than using books for research, students today are (32)______ to the Internet to download enormous amounts of data available online.

In the past, students were limited to their school’s (33)______ of books. In many cases, they got to the school library and found out that someone had already taken the books they needed. Nowadays, such inconvenience can be avoided since the Internet never runs out of information. Students, however, do have to

(34)______ sure that the information they find online is true. Teachers have also benefited from the homework which is done on the Internet. They do not need to carry students’ papers around with them any more. This is because online (35)______ allow students to electronically upload their homework for their teachers to read and mark. Of course, this also means that students can no longer use the excuse that the dog ate their homework!

(Adapted from “Gold Pre-first Exam Maximizer,” by H. Chilton & L. Edwards, 2013, Harlow: Pearson)

Điền ô số 31

A. But

B. For

C. While

D. BecauseD. Because

1
14 tháng 11 2017

Đáp án C

Dịch: Internet đã thay đổi hoàn toàn cách mà học sinh làm bài tập về nhà. (1) Trong khi bài tâp về nhà ngày nay vẫn là có nghĩa là dành thời gian làm bài ở thư viện thì lý do ở đây lại khác….