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Số lượng câu hỏi
4
Số lượng câu trả lời
1
Điểm GP
0
Điểm SP
0
Người theo dõi (2)
Đang theo dõi (0)
Câu trả lời:
giup minh y c/m BC^2=4AH.DH vs
Chủ đề:
Bài 3: Đồ thị của hàm số y = ax + b ( a khác 0)Câu hỏi:
Cho hàm số : 1, y=2x-1 2, y= -3x+2 3, y=3x+4 4, y= -1/3x +2 5, y=2/3x +2
1. Vẽ đồ thị hàm số
2. Tính góc tạo bởi đường thẳng đó với trục Ox
3.Đường thẳng cắt trục Ox và Oy lần lượt tại A,B. Tính diện tích tam giác AOB
4. Tìm khoảng cách từ gốc toạ độ đến đường thẳng đó
5. Tìm toạ độ giao điểm của các hàm số trên với trục tung và trục hoành
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Viết lại câu sao cho nghĩa không đổi
1.If I met the author one day, I'd ask him to sign my copy of this book. Were I .................................................................................................. 2.He always has his nose in a book and never pays attention to what I say. If he didn't.............................................................................................. 3.Alice and Charles did not decide to move to a bigger house until after the birth of their second child. Only when................................................................................................................. 4.You are under no obligation to accept their offer. You can please....................................................... 5.Martin may not be very well but he still manages to enjoy life. Martin's poor............................................................................... 6.The Pacific Ocean is on average deeper than the Atlantic. The average.......................................................................... 7.I don't really like her, even though I admire her achievements. Much........................................................................................... 8.There were not nearly as many people there as I had expected. Here were far.................................................................................... 9.There was no need for you to have gone to all that trouble. You......................................................................................... 10. This is the best essay I have ever written. Never..............................................................
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Điền dạng đúng của từ trong ngoặc:
1.The low.............(attend) at the concert was a result ò the organizers' carelessness about giving it even more extensive publicity.
2.Another attempt to establish a...................(last) peace has failed after one of the negotiators refused to sign the treaty.
3.This new situation is more than...................(advantage) to all the investors. Definitely,it's a chance not to miss.
4.Besides innumerable human victims, the tornado has caused an enormous ...................(destroy) to the buildings in the area.
5.A sudden..............(grow) in food prices will certainly bring about violent protests from the population.
6.Let's stop quarrelling about such................(relevant) details.It doesn't matter what we take first,the soup or the second course.
7.The number of the nails Harry had bought at the ironmonger's wasn't.............(suffice) and we had to borrow a few from our neighbour.
8...............(obey) at this school is severely punished, so remember to mind your manners both during the lessons and outside the classroom.
9.Some people claim that the microprocessor is the greatest...............(invent) of the 20th century.
10.The actors received a.......................(stand) ovation from the enthusiastic audience for their brillant performance in Othello.
11.Without the congressmen's...............(value) assistance we would never have gathered enough money for our son's operation.
12.It's.............(point) to try to reach the village on foot.The only possible way of getting there is by helicopter.
13.Jack's intial.....................(excite) at talking part in the competition died down after he had learned about the extra costs he would have had to cover.
14.The.........................( please) of spending holidays in the countryside consists on breathing fresh air and being in harmony with nature.
15.You'd better ask Frank.I'm not in................(possess) of the manual you are looking for.