17.85+25.17+81.100

=17.(85+25)+81.100

=17.110+81.100

=1870+8100

=9970

31 - 17 - x = 55

14 - x = 55

x = 14 - 55

x = -41

a.mồng tơi

b.me

c.phượng

d.hoa hồng

|a - 3| - 3 = 0

|a - 3|=  3

TH1: a - 3 = 3 => a=  6

TH2: a-  3=  -3 => a = 0

Hue is a city which is filled mostly by trees, so the weather here is very cool, fresh and quiet. However, the city is not less busy and crowded than others. Each year, the city celebrates the fantastic festival to introduce the Vietnamese traditional food, flowers, trees, kite flying and Vietnamese traditional costumes. Throughout the city, the ancient tombs, temples and gardens of age with a few hundred years old are still preserved.

Hue has several tourist attractions which are very peaceful and ancient. Among these is Hue Citadel which was recognized is World Cultural Heritage by UNESCO. Hue Citadel is one of the place where attract the most tourists every year. Besides, there are many ancient pagodas, temples... that is also known by many tourist tourists around the world.

In summary, Hue is a city that has something to offer everyone. And here is certainly worth visiting and surely that Hue is one of the most ideal place to spend a holiday.

a.cây xương rồng,cây cành giao, cây thuốc bỏng

b.cây xoài , cây cóc, cây xương rồng

c.cây mít, cây nhãn , cây ổi

d.cây cành giao,cây có , cây hành

Read the following passage, and answer the questions that follow

An earthquake measuring 7.8 on the Richter scale hit Nepal on April 25th, 2015. It was the most powerful earthquake to strike Nepal since 1934. The earthquake occurred in central Nepal. It also affected India, Bangladesh and Tibet, China. The earthquake killed more than 8,800 people and injured over 23, 000 people. Hundreds of thousands of people were made homeless with entire villages flattened. Kathmandu Burbar Square, a UNESCO World Heritage Site, was destroyed. The earthquake also caused an avalanche on Mount Everest which killed at least 19 people. About 90% of soldiers from Nepalese Army were sent to stricken areas. Many countries and international organizations sent medical experts, emergency workers, rescue staff, and money as well as providing medical supplies, food and equipment to help Nepal.

What happened to Kathmandu Burbar Square?

A. It was safe

B. It was destroyed

C. It was moved away

D. It wasn’t exist

-Có công mài sắt, có ngày nên kim
-Tay làm hàm nhai
-Tay quai miệng trễ
-Cần cù bù thông minh
-Thua keo này bày keo khác
-Có chí thì nên , nhà có nền thì vững
-Có chí làm quan,có gan làm giàu
-Kiến tha lâu đầy tổ
-Thất bại là mẹ thành công
-Chớ thấy sóng cả mà ngã tay chèo

-Tích tiểu thành đại
-Một nắng hai sương

-Chịu thương chịu khó

dùng tc dãy tỉ số = nhau nhé .tìm đc x,y rồi => kq 

vì số chia hết cho 55 sẽ chia hết cho 5 và 11

số có chữ số tận cùng là 0 hoặc 5 sẽ chia hết cho 5 

số có hiệu của các chữ số chẵn và các chữ số lẻ chia hết cho 11 thì số đó chia hết

bạn dựa vào 2 dấu hiệu này để suy ra