1+1=2

160+123=283

1+1=2....160+123=283nha>>học tốt.

1+1=2

160+123=283

nhá

15876

HT

= 15876

học tốt ( k7 nha )

15876 nka!!

K cho mk vs!!   

HT~

bằng 2 nha

1+ 1=2 em nha

Đáp án :

1 + 1 = 2

# Hok tốt !

AI TRẢ LỜI MÌNH , K CHO NHÉ!!!!!!!!!!!!!!!

Gọi số tuổi hiện nay của em là x ( tuổi )

Tuổi chị hiện nay là :  4x ( tuổi )

Chị hơn em số tuổi là : 4x - x = 3x ( tuổi )

Vì hiệu số tuổi giữa hai người là không đổi nên khi tuổi em bằng tuổi chị hiện nay ( tuổi em = 4x ) thì chị vẫn hơn em 3x tuổi

Số tuổi của chị khi đó là 4x + 3x = 7x ( tuổi )
Tổng số tuổi của hai chị em lúc đó là : 7x + 4x = 11x = 33 ( tuổi )

=> 11x = 33

=> x = 3 

Vậy tuổi em hiện nay là 3 tuổi

Tuổi chị hiện nay là : 3 x 4 = 12 ( tuổi )

Đáp số : em : 3 tuổi

              chị : 12 tuổi 

anh 32 tuoi , em 24 tuoi

bạn có thể giải chi tiết được không

Ha Long Bay is located in Quang Ninh province, northeastern Vietnam.There are many caves in Ha Long Bay such as: Trinh Nu cave, Dau Go cave, Luon cave, Kim quy cave, etc. Hạ Long bay's inhabitants have developed numerous tales explaining names given to various isles and caves in the bay.

Halong Bay (the bay where the dragon landed) is one of the west coast of the Gulf of Beibu Gulf in the South China Sea North Vietnam, including the islands of the Sea of ​​Halong City, Cam Pha Town and part of Van Don, Quang Ninh province.

Is the center of a large area with many factors similarities in geology, geomorphology, landscape, climate and culture, with Bai Tu Long Bay northeast of Cat Ba Island and the southwest, restricted area of ​​about 1,553 Ha Long Bay covers 1,969 square km large and small islands, mostly limestone islands, which are the core of the bay has an area of ​​335 km² island 775 dense capacitors . Tectonic history of Limestone Bay has spent about 500 million years to the ancient geographical circumstances are very different; Karst and evolution over 20 million in expenses with a combination of factors such as thick limestone floors, hot and humid climate and tectonic processes improve the overall slow . The combination of environment, climate, geology, geomorphology, Halong Bay has done to become the biodiversity of ecosystems including clusters of evergreen and banks tropical ecosystems and coastal moist marine ecosystems with more fundamental . 14 endemic plant species and 60 endemic animal species have been found among the thousands of resident flora and fauna Gulf.

These findings, archaeological exploration and cultural studies showed the presence of prehistoric inhabitants on Halong Bay quite early, made up of ancient cultural forms to include Soi Nhu culture between 18000-7000 BC, Cai Beo culture in 7000-5000 BC and Ha long culture today between 3500-5000 years . The process of building and protecting the people of Vietnam traditional country, along the history, also confirmed the position outpost and cultural status of Halong Bay through the website called is associated with an historical references handed down so far, such as Bai Tho mountain, Dau Go cave, Bai Chay etc. Currently, Ha Long Bay is a dynamically developing sector of the conditions and advantages available as a great potential for tourism, scientific research, aquaculture, fisheries, transport water for north east coast of Vietnam in particular and Vietnam in general north

From more than 500 years ago in Van Don poems entered Lo, Nguyen Trai was first praised Ha Long Bay is "sky high stone wonders" . 1962 Ministry of Culture - Information (Vietnam) Rated heritage Ha Long Bay and national plans and conservation areas . 1994 core area of ​​Ha Long Bay is a world heritage aesthetic value (criterion vii) natural UNESCO, and was re-accredited 2nd special global value local geological Appearance (viii standards ) in 2000 . Along with Nha Trang Bay and Lang Co Bay in Vietnam, Ha Long Bay is one of 29 Bay Club is the most beautiful bays in the world rankings and officially recognized in July 2003

Halong Bay and Cat Ba island formed one of 21 national tourist destinations Vietnam first. In 2015, the Cultural Heritage Bureau announced the number of tourists to Ha Long Bay is more than 2.5 million passengers.

Nguyễn Đào Thuỳ Dương mk k hok qiỏi văn lém , 

Mk chúc bn lm đc 1 bài văn thật hay , đạt đc điểm thật cao nhé

CỐ LÊN !! CỐ LÊN

Mk vỗ chân cổ vũ bn 

Đâu phải làm chuyện gì sai đâu mà bảo là .....trái tim phải không?Nếu chưa có ai giải đáp thì bạn tự làm đi , đợi đến khi có ng trả lời nhé!!