Cho tam giác ABC, có góc A = 70 độ ; góc B - C = 30 độ . CMR : Tam giác ABC cs 2 góc = nhau.

văn học cổ đại phương tây phát triển rực rỡ hơn phương đông là nhờ điều kiện nào

Giúp mình với!!!!!!!!!!!!!!!!!!!!!!!!!!!!

phân biệt the other's ; the other, the one's, ones

There are no results for read the text and answer the questions.last month,we went to Doi Tam,a village famous for its drum making techniques,in Ha Nam province.the craft was first introduced to the village in the 8th or 9th century.today there are more than six hundred drum makers living in Doi Tam village.I was amazed to see big drums in front ò every house in the village.people say that it takes four workers three days to make a drum with a diameter of 1.5 metres.to make a drum,the craftsmen have to follow an eight stage process.stretching the drumhead is the most challenging stage since they have to carefully assess the sound it makes.the other steps do not require such high skills.nowadays,Doi Tam drums are not only famous in viet nam but are also sold to other countries such as laos,cambodia,japan,and the usa,1)when was the craft first introduced to the village?,2)how many stages do the craftsmen have to follow to make a drum?3)are doi tam drums sold to japan,and the usa?4)where is doi tam village? read the text and answer the questions.last month,we went to Doi Tam,a village famous for its drum making techniques,in Ha Nam province.the craft was first introduced to the village in the 8th or 9th century.today there are more than six hundred drum makers living in Doi Tam village.I was amazed to see big drums in front ò every house in the village.people say that it takes four workers three days to make a drum with a diameter of 1.5 metres.to make a drum,the craftsmen have to follow an eight stage process.stretching the drumhead is the most challenging stage since they have to carefully assess the sound it makes.the other steps do not require such high skills.nowadays,Doi Tam drums are not only famous in viet nam but are also sold to other countries such as laos,cambodia,japan,and the usa,1)when was the craft first introduced to the village?,2)how many stages do the craftsmen have to follow to make a drum?3)are doi tam drums sold to japan,and the usa?4)where is doi tam village

Một đoạn phân tử ADN có khối lượng 9.20^-5 đvC trung bình mỗi Nu nặng 300 đvC. a, Tính sô lượng Nu trên đọan phân tử ADN b, Nếu đọan phân tử ADN trên có: A= 20% tổng số Nu; thì số lượng mỗi đọan Nu bằng bao nhiêu %? c,Chiều dài đọan phân tử ADN d, Số lượng chu kì xoắn của Nu.

Mẹ em mua 295 viên gạch hình vuông có cạnh 3cm để về lót lại nền nhà hình chữ nhật có diện tích 2700 cm2 . Vậy với số viên gạch trên mẹ em có đủ để lát kín nền nhà không?

Cho 100 ml dung dịch H3PO4 bông nồng độ 0,2 mol tác dụng với dung dịch NaOh nồng độ 0,2 mol . Tính khối lượng muối tạo thành??

Giúp bài này với ạ!!! Gợi ý:Dùng t/c dãy tỉ số bằng nhau Hoặc phương pháp giá trị. Lưu ý:Giải chi tiết và đầy đủ hộ ạ❤👀🙏

Đơn thức 9x^2y^3z chia hết cho đơn thức nào 9x mũ 2 y mũ 3z chia hết cho đơn thức nào