11. khoảng đồng biến của hs y= x^3 -3x^2+3x-5 2. hs y=x^4 đồng biến trong khoảng nào CHỈ CẦN ĐÁP SỐ. TỐT TÍNH THÌ CHO LUÔN LỜI GIẢI

Làm 1 trong 3 đề nha (ko cop mạng)

Part D: Writing (2.0ms) 1. I had a bad cold, so I didn’t go to school yesterday. (Rewrite this sentence with “because”) -> …………………………………………………………………………………….. 2. Lan can sing very well. She can’t play the piano. (Combine these sentences with “although”) -> …………………………………………………………………………………….. 3. We make the air dirty because we use the car all the time. (Rewrite this sentence with “If”) -> …………………………………………………………………………………….. 4. most/ London/ tea/ is/ popular/ the/ drink/ in. (Rearrange the words to make a sentence) -> ……………………………………………………………………………………..

Mỗi năm có 7 tháng 31 ngày. Có bao nhiêu tháng có 28 ngày? Giýp lần cuối thôi! Plz, ko đủ điểm

a) CMR đường thẳng (d) luôn đi qua điểm cố định khi m thay đổi b) Tìm các giá trị của m để (d) cắt (P) tại 2 điềm phân biệt có hoành độ X1,X2 thỏa mãn X1<2<X2 Các bạn oi giúp m với m rất gấp m sẽ vote 5sao

put the verbs in brackets into the correct form

Nếu có thể thì làm thêm câu tìm giá trị nhỏ nhất của Q nha

the weather was bad because we had to cancel our picnic A. was B. because C. had to D. cancel p/s : chọn từ sai nhé

tl nhanh lên nhé 1)……………..call for the ………………of the countryside.( conserve ) 2) People must learn about keeping the environment ………………(pollute) 3) It was very ……of you to leave the medicine where the children could get it.(care) 4) Environmental groups want a total…..on the dumping of nuclear waste.( prohibit) 5) I am ……………..that people have spoiled this area.(disappoint) 6) They are meeting to find ways to protect the forests from……………(forest). 7) The……….of computers is one of the recent……in our time (invent-achieve) 8) The ………….to the problem will be difficult to find.( solve) 9) The news has caused …………………among scientists.( excite) 10) Thanks a lot for your…………….help. (value) 11) Rain will reach……………………areas at the end of this week.(coast) 12) Many ………………walked around the tourist attraction to take photos.(sight) 13) Thanks to …….conservationists, many kinds of plants and animals are protected. ( enthusiasm) 14) It is……………….that some people poach fish in the Nhieu Loc Canal.(disappoint) 15) We are worried that rivers and canals are becoming more and more ……( pollute) 16) The……………were disappointed that people had spoiled the area. (environmental) 17) In order to keep our environment………..…, we shouldn’t drop litter in public places (pollute) 18) Don’t pump……………. into seas and rivers or it will pollute them (sew) 19) If we keep on... the air, more people will suffer from respiratory diseases (pollution) 20) The local authorities have received many letters of………. about the industrial wastes from that factory (complain)

Cho góc AOB . Vẽ tia OC nằm giữa hai tia OA và OB. Gọi OD, OE lần lượt là các tia phân giác của góc AOC và BOC . a) Tính tỉ số: DOE AOB . b) Tìm giá trị lớn nhất của số đo góc DOE .