x/y=2/3 x/z=3/5 và x^2+y^2+z^2=217

585g … 558g 305g … 300g + 50g 1kg … 850g + 150g 526g … 625g 450g … 500g – 60g 1kg … 640g + 360g

một thửa ruộng hình chữ nhật có chu vi là 100 m,chiều dài hơn chiều rộng 10 m . Tính diện tích

Exercise 8 : Complete the following sentences using the past continuous forms of the verbs in brackets. Question 1 : This time last year I_____(live) in Brazil. Question 2 : What you_____(do) at 10:00 last night? Question 3 : At that time yesterday, I_____(write) a letter. Question 4 : She_____(learn) English at school at 7:45 yesterday morning. Question 5 : - What you_____(do) at this time last night? - I was asleep. Question 6 : Matt burned his hand while he_____(cook) lunch. Question 7 : I saw you in the park yesterday. You_____(sit) on the grass and _____(read) a book. Question 8 : When I came home, my mother_____(prepare) the meal. Question 9 : Jane_____(wait) for me when I arrived. Question 10 : Yesterday evening, while my mother_____(cook) in the kitchen, my father_____(watch) the news on TV. Question 11 : Just as I_____(leave) the house, I heard an explosion from the inside the lab. Question 12 : When Beth arrived, we_____(have) dinner. Question 13 : Why didn’t you listen to me while I (talk)_____with you? Question 14 : Michiko couldn’t come to the phone when the director called her because she_____(work) in the factory. Question 15 : I_____(enjoy) the party, but Chris wanted to go home. Exercise 9 : Complete the following sentences using the past perfect forms of the verbs in brackets. Question 1 : Before Sarah arrived, Eric_____(go) home. Question 2 : When Jane arrived at the theater, the film_____(start). Question 3 : He thanked me for everything I_____(do) for him. Question 4 : After Angelia_____(eat) the cake, she began to feel sick. Question 5 : When he went out to play, he_____(do already) his homework. Question 6 : They_____(be) married for two years or so when Roy employed a very attractive Indian secretary in his Glasgow office. Question 7 : Linda_____(not study) for the exam, so she was very anxious. Question 8 : I couldn’t go into the cinema because I_____(not bring) my tickets. Question 9 : The man sitting next to me on the plane was very nervous. He never _____(fly) before. Question 10 : The tornado knocked down the tree that we_____(plant). Question 11 : Laura_____(not/use) smartphone before, so I showed her how to use it. Question 12 : We weren’t hungry. We_____(just have) lunch. Question 13 : We didn’t really want to go and see the film again. We_____(already see) it twice - so we said “no” and we went to a shopping mall instead! Question 14 : When thieves stole my favorite feather wallet, I was really upset. I _____(have) it for over five years. Question 15 : Before going to the meeting, he_____(consult) with his lawyers.

mình cần gấp lám mong mọi người giúp húa vote 5sao

Giúp mình với mọi ngườioooooooooooooooooooooooooooooooooooooooo

Cho hình thoi ABCD có A=60* . Trên AD và CD lấy các điểm M, N sao cho AM + CN = AD. Gọi P là điểm đối xứng của N qua BC, MP cắt BC tại Q. Tứ giác MDCQ là hình gì ?

giải giúp em với ạ, em cần gấp lắm ạ

Tìm x,y a) ( 2x+1) (y-5)=12 b) 8+x=y(x+3) c) xy+2x+2y+4=10 n)2xy+x+y=17

giúp em làm bài với ạ em cảm ơn nhiều ạ