Bài 2 câu6
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câu6
Bài 6:
a: 
b: PTHĐGĐ là:
x^2-x-2=0
=>(x-2)(x+1)=0
=>x=2 hoặc x=-1
Khi x=2 thì y=4
Khi x=-1 thì y=1
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câu6: tính nhanh A=10+12+14+...............+96+98+100
Số số hạng: (100-10):2+1 = 46 (số)
Tổng trên là: (100 + 10) x 46 : 2 = 2530
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20 tháng 3 2022 lúc 13:00
Sắp xếp câu
6. schedule/ the/ is/ for/ my/ to/ Tokyo/ visit/ this/ two-day/.
Giải dùm em câu6, 14, 15, 16, 17 với ạ. Em cảm ơn nhiều
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Giải dùm em câu6, 14, 15, 16, 17 với ạ. Em cảm ơn nhiều
18 tháng 5 2022 lúc 16:14
Câu6: (1,0 điểm) Tính bằng cách thuận tiện nhất:
23´ 18,54 + 78´ 18,54 - 18,54
giúp mik z
= (23 + 78 - 1) x 18,54
= 100 x 18,54
= 1854
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= 18,54 x (23 + 78 - 1)
= 18,54 x 100
= 1854.
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23´ 18,54 + 78´ 18,54 - 18,54
= ( 23 + 78 - 1 ) x 18,54
= 100 x 18,54
= 1854
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Xem thêm câu trả lời
a,A=(-12)+(+27)+(-88)+(+173)
b,B=(-2023)+(+23)-(-2000)
Câu6
a,=A-{-[+(-20)]}-{+[-(-15)]}
b,B=+{-[-(+125)]}-{-[+(-25)]}
Xem thêm câu trả lời
Khoanh tròn vào phương án tốt nhất để hoàn thành các câu6. In…………, we learn about books and write essays.A. History B. Literature C. Math D. Physics7. He…………a vacation next week. A. having B. have C. has D. will have8. He always…………in the library after school. A. will study B. studies ...
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Khoanh tròn vào phương án tốt nhất để hoàn thành các câu
6. In…………, we learn about books and write essays.
A. History B. Literature C. Math D. Physics
7. He…………a vacation next week.
A. having B. have C. has D. will have
8. He always…………in the library after school.
A. will study B. studies C. study D. are studying
9. Her group is …………a play for the school anniversary celebrations.
A. doing B. talking C. rehearsing D. playing
10. What’s your…………subject, Lan? - I like History.
A. famous B. like C. favorite D. popular
11. “What time is it?” It…………four fifteen.
A. has B. at C. X D. is
12. They put the chairs…………the middle of their garden.
A. at B. on C. in D. X
13. She is…………intelligent than her classmates.
A. least B. more C. much D. fewer
14. He had a chance to watch a horse…………in his homeland during his summer holidays.
A. trip B. racing C. volunteer D. station
15. I ’m seeing my old classmate next Sunday. He’s a very…………person. He enjoys sports very much.
A. sporty B. serious C. curious D. responsible
16. Would you like some milk?
A. Yes, I do B. No, I don’t like
C. I like much D. No, thanks
17. Nam: What’s the matter with you? You look so sad. Hai:…………
A. Forget it! B. Let me say something,
C. I don’t know the answer. D. Not at all.
6. In…………, we learn about books and write essays.
A. History B. Literature C. Math D. Physics
7. He…………a vacation next week.
A. having B. have C. has D. will have
8. He always…………in the library after school.
A. will study B. studies C. study D. are studying
9. Her group is …………a play for the school anniversary celebrations.
A. doing B. talking C. rehearsing D. playing
10. What’s your…………subject, Lan? - I like History.
A. famous B. like C. favorite D. popular
11. “What time is it?” It…………four fifteen.
A. has B. at C. X D. is
12. They put the chairs…………the middle of their garden.
A. at B. on C. in D. X
13. She is…………intelligent than her classmates.
A. least B. more C. much D. fewer
14. He had a chance to watch a horse…………in his homeland during his summer holidays.
A. trip B. racing C. volunteer D. station
15. I ’m seeing my old classmate next Sunday. He’s a very…………person. He enjoys sports very much.
A. sporty B. serious C. curious D. responsible
16. Would you like some milk?
A. Yes, I do B. No, I don’t like
C. I like much D. No, thanks
17. Nam: What’s the matter with you? You look so sad. Hai:…………
A. Forget it! B. Let me say something,
C. I don’t know the answer. D. Not at all.
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6. In…………, we learn about books and write essays.
A. History B. Literature C. Math D. Physics
7. He…………a vacation next week.
A. having B. have C. has D. will have
8. He always…………in the library after school.
A. will study B. studies C. study D. are studying
9. Her group is …………a play for the school anniversary celebrations.
A. doing B. talking C. rehearsing D. playing
10. What’s your…………subject, Lan? - I like History.
A. famous B. like C. favorite D. popular
11. “What time is it?” It…………four fifteen.
A. has B. at C. X D. is
12. They put the chairs…………the middle of their garden.
A. at B. on C. in D. X
13. She is…………intelligent than her classmates.
A. least B. more C. much D. fewer
14. He had a chance to watch a horse…………in his homeland during his summer holidays.
A. trip B. racing C. volunteer D. station
15. I ’m seeing my old classmate next Sunday. He’s a very…………person. He enjoys sports very much.
A. sporty B. serious C. curious D. responsible
16. Would you like some milk?
A. Yes, I do B. No, I don’t like
C. I like much D. No, thanks
17. Nam: What’s the matter with you? You look so sad. Hai:…………
A. Forget it! B. Let me say something,
C. I don’t know the answer. D. Not at all.
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Khoanh tròn vào phương án tốt nhất để hoàn thành các câu6. How……………is your house from school? - It’s about 20 minutes by bike.A. much B. many C. long D. far7. Nam has learnt English since, he was four and is now……………good.A. nearly B. possibly C. quite D. probably8. It is not easy……………an apartment in Ha Noi.A. find ...
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Khoanh tròn vào phương án tốt nhất để hoàn thành các câu
6. How……………is your house from school? - It’s about 20 minutes by bike.
A. much B. many C. long D. far
7. Nam has learnt English since, he was four and is now……………good.
A. nearly B. possibly C. quite D. probably
8. It is not easy……………an apartment in Ha Noi.
A. find B. finds C. to find D. finding
9. Schools in Viet Nam are different…………..those in the US.
A. from B. for C. in D. at
10. The bathroom in her house has a sink, a tub and a…………..
A. armchair B. shower C. refrigerator D. stove
11. He usually starts work……………six in the morning.
A. in B. on C. at D. to
12. There is……………wine in the red cup than in the orange cup.
A. a few B. a little C. less D. fewer
13. I never drink……………orange juice for breakfast.
A. a lot of B. much C. A & B D. many
14. Come in and have a……………
A. seat B. sit C. table D. chair
Câu 1
a) Tìm câu bậc hai của mỗi số sau : 81; 9 trên 16
b) Tìm x để biểu thức sau có nghĩa : 3 trên căn 2-7x
Câu 2
b) (2√3-3√2)^2 +2√6 +3√24
Câu 3
b) Giải Phương Trình : √27x-18-6√3x-2
Câu6
a) với a là góc nhọn, hãy rút biểu thức: sin^6 alpha + cos^6 alpha +3sin^2 alpha × cos^2 alpha
Câu 8: từ đỉnh một tòa nhà cao 54m, người tra nhìn thấy 1 ôtô đang đỗ dưới 1 góc nghiêng xuống là 40°. Hỏi ôtô đang đỗ cách tòa nhà đó khoảng bao nhiêu mét?
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Câu 1 a) Tìm câu bậc hai của mỗi số sau : 81; 9 trên 16 b) Tìm x để biểu thức sau có nghĩa : 3 trên căn 2-7x Câu 2 b) (2√3-3√2)^2 +2√6 +3√24 Câu 3 b) Giải Phương Trình : √27x-18-6=√3x-2 Câu6 a) với a là góc nhọn, hãy rút biểu thức: sin^6 alpha + cos^6 alpha +3sin^2 alpha × cos^2 alpha Câu 8: từ đỉnh một tòa nhà cao 54m, người tra nhìn thấy 1 ôtô đang đỗ dưới 1 góc nghiêng xuống là 40°. Hỏi ôtô đang đỗ cách tòa nhà đó khoảng bao nhiêu mét?