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29 tháng 8 2021

it is circle

29 tháng 8 2021

it is circle

HT

3 tháng 5 2022

c

3 tháng 5 2022

c

25 tháng 11 2023

Ta có: 1176 chia hết cho 1, 2 ,3, 4, 6,7,8,12,14,21,24,28,42,49,56,84,98,147,168,196,294,392,588,1176

Nếu các cạnh của HCN là 1 số nguyên thì số giá trị khác nhau thoả mãn là 12

Read the passage , then decide whether the statements that follow are True or FalseThe ao dai, the traditional dress of Vietnamese women, has been mentioned in many poems, novels and songs. It is a long silk tunic that is slit on the sides and worn over loose pants. Vietnamese women usually wear it, especially on special occasions such as Tet, Vietnamese Teachers’Day, or Wedding Anniversary. Nowadays, some fashion designers have made it more and more beautiful by changing the traditional ao...
Đọc tiếp

Read the passage , then decide whether the statements that follow are True or False
The ao dai, the traditional dress of Vietnamese women, has been mentioned in many poems, novels and songs. It is a long silk tunic that is slit on the sides and worn over loose pants. Vietnamese women usually wear it, especially on special occasions such as Tet, Vietnamese Teachers’Day, or Wedding Anniversary. Nowadays, some fashion designers have made it more and more beautiful by changing the traditional ao dai. Some of them print lines of poetry on it, or they add the patterns such as sun, stars, crosses, and stripes to the ao dai. The ao dai becomes the national clothing, just like Kimono in Japan. Every morning, thousands of schoolgirls in white ao dai make the streets look nicer. Vietnamese women continue to wear this unique and fashionable dress.
Choose True (T) or False (F)
1. The ao dai isn't the traditional dress of Vietnamese women.
2. Vietnamese women never wear the ao dai on special occasions.
3. The Ao Dai is a long silk tunic that is slit on the sides and worn over loose pants.
4. Some designers print lines of poetry on it, or they add the patterns such as sun, stars, crosses, and stripes to the ao dai.
5. Vietnamese women continue to wear this unique and fashionable dress.

 

1
22 tháng 11 2021

Choose True (T) or False (F)
1. The ao dai isn't the traditional dress of Vietnamese women.      F
2. Vietnamese women never wear the ao dai on special occasions.           F
3. The Ao Dai is a long silk tunic that is slit on the sides and worn over loose pants.          T
4. Some designers print lines of poetry on it, or they add the patterns such as sun, stars, crosses, and stripes to the ao dai.          T
5. Vietnamese women continue to wear this unique and fashionable dress.             T

15 tháng 2 2017

Giải:
Gọi 3 cạnh của tam giác là a, b, c và các chiều cao tương ứng là h, k, g \(\left(a,b,c,h,k,g>0\right)\)

Ta có: \(\frac{a}{2}=\frac{b}{3}=\frac{c}{4}\)

\(ah=bk=cg\)

\(\Rightarrow2.\frac{a}{2}.h=3.\frac{b}{3}k=\frac{c}{4}.4.g\)

\(\Rightarrow2h=3k=4g\)

\(\Rightarrow\frac{2h}{12}=\frac{3k}{12}=\frac{4g}{12}\)

\(\Rightarrow\frac{h}{6}=\frac{k}{4}=\frac{g}{3}\)

Vậy 3 chiều cao tương ứng của tam giác tỉ lệ với 6, 4, 3

15 tháng 2 2017

cảm ơn bn rất nhìu

16 tháng 2 2017

4:3:2 may be

15 tháng 2 2017

bn dịch, mk làm thử xem

15 tháng 2 2017

mình dịch nè: nếu tỉ số giữa ba cạnh của một tam giác là 2:3:4 thì tỉ số 3 chiều cao tương ứng là

A lot of people like to play their records as loudly as possible. The (1) ________ is that the rest of the family and the neighbors often complain (2) ________ they don't like the music. One (3) ________ to this problem is to wear headphones, but headphones are usually uncomfortable.An arm-chair which has a record-player built into it has just been (4) ________ by a British engineer, Stephen Court.The armchair looks like an ordinary armchair with high back. However, each of the two sides of the...
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A lot of people like to play their records as loudly as possible. The (1) ________ is that the rest of the family and the neighbors often complain (2) ________ they don't like the music. One (3) ________ to this problem is to wear headphones, but headphones are usually uncomfortable.

An arm-chair which has a record-player built into it has just been (4) ________ by a British engineer, Stephen Court.

The armchair looks like an ordinary armchair with high back. However, each of the two sides of the chair has three loudspeakers inside to reproduce middle and high sounds. Low sounds are reproduced by a pair of loudspeakers in a hollow (5) ________ under the seat. Anyone who sits in the chair hears sounds coming from all around his/her head.

Because we cannot tell the exact (6) ________ from which low sounds come, it doesn't (7) ________ that they come from underneath or behind. It is the higher sounds coming from the sides of the chair that create a stereo effect.

These sounds travel only a few inches to reach the listener's ears. (8) ________, it takes only a little power to make the music sound very loud. Only a small amount of sound leaks out from behind the chair into the room to (9) ________ others. Most of the sound is (10) ________ by the listeners.

2
30 tháng 6 2018

(1) result

(2) if

(3) answer

(4) designed

(5) space

(6) source

(7) matter

(8) Consequently

(9) disturb

(10) absorbed

1 tháng 7 2018

1 result

2 if

3 answer

4 designed

5 space

6 source

7 matter

8 Consequyently

9 disturd

10 absorbed