Đáp án:B
Giải thích các bước giải:
6-2m khác 0
<=> -2m khác -6
<=> m khác3
Để hàm số nhận điểm O( 0;0) là điểm cao nhất thì
`y≤0`
⇔`(6-2m)x^2≤0`
⇔`6-2m≤0` ( vì `x^2≥0`)
⇔`2m≥6`
`⇔m≥3`
mà `m≠3`
⇒`m>3`
⇒ Chọn C
Mọi người giúp em giải bài này với ạ
Em hãy tả một người hùng thầm lặng.Làm hộ mình nhé sáng mai mình nộp rồi
41. It started raining an hour ago ->It has….…………………………………………………………………………………………… 42. We haven’t visited my grandfather for two months ->The last time…………………………………………………………………………………….. 43. In Vietnam, April is hotter than any other months of the year ->In Vietnam, April is ….………………………………………………………………………….. 44. Van keeps forgetting his homework ->Van is……….……………………………………………….………………………………….. 45. I would like you to help me to put the chairs away ->Do you mind.……………………………………………………………………………………..
Mọi người giúp em giải bài luận này với ạ >.< Fort Collins certainly does its part to uphold Colorado's reputation as one the country's most physically active states. Recreational activities in Fort Collins range from cycling and hiking to snowboarding and kayaking. Thanks to 600 acres of parks, 40,000 acres of natural areas, 20 miles of off-street hike/bike trails, more than 280 miles of on-street bike lanes and a robust lineup of city-run indoor exercise facilities, Fort Collins residents have plenty of opportunities to get their hearts pumping. The city’s vibrant craft brewing scene serves as a hard-earned reward for Fort Collins’ active locals. Fort Collins has long prioritized the performance of its public school system, with efforts that have paid off in spades and made the city one of the country's best places to live. Fort Collins' 41,680 students perform 3 to 19 percent higher than the statewide average in all subjects; and on a national scale, Fort Collins pupils consistently are ahead of the game when it comes to ACT and SAT college entrance exam averages. Fort Collins has invested extensively in its local library system, cultural offerings and public learning opportunities. The city’s Fort Collins Museum of Discovery – a gorgeous hands-on learning space, featuring an array of traditional and pop-science exhibits that fascinate the young and old – is a regional destination. The museum’s marquee attraction, the OtterBox Digital Dome Theatre, screens a variety of nationally and internationally released science and nature films on a 35-foot dome screen. Rounding out the city’s cultural, academic and natural attractions is Fort Collins’ notable slate of industry. Regarded as an engine of economic growth and stability for northern Colorado, Fort Collins enjoys the presence and job provision of Fortune 500 luminaries such as Anheuser-Busch, Eastman Kodak, Hewlett-Packard and Agilent Technologies. Businesses in Fort Collins find strong support from local residents and city leaders.
vẽ mầm cute phá nốt xong cày lại :))
Parabol là gì ??? Nếu có xin ví dụ đc ko cảm ơn trc
còn 4 câu tlhn nữa mà sao khó quá ;-; cầu trời khấn phật cho tui thêm 4 câu tlhn nữa là tui mãn nguyện rùi :,] vẽ chibi đang với tay về phía danh hiệu ctlhn
trong mặt phẳng tọa độ Oxy,cho đường thẳng (d):y=(a-1)x+b đi qua điểm M(-1;-2) và song song với đường thẳng(d'):y=3x-1.Tìm các số a và b
Make one sentense from two. Use TOO or ENOUGH and a phrase with FOR or a To-infinitive. 1. We couldn’t eat the food. It was very hot. 2. Three people can’t sit on this sofa. It isn’t wide. 3. A taxi would have been best. But I didn’t have much money. 4. I couldn’t cary the equipment. I had such a lot. 5. Sarah can’t take a day off. She’s very busy. 6. We couldn’t climb over the wall. It was very high. 7. A picnic would be nice. But it’s wet 8. Natasha wants to be a professional musician. She’s very good. 9. Nobody could move the piano. It was very heavy. 10. We shouldn’t swim in this river. The water isn’t clean. 11. I don’t wear this coat in winter. It isn’t warm. 12. You can’t see some things without a microscope. They are very small. 13. All my guests will need chairs. But I haven’t got very many. 14. He didn’t get the job. He wasn’t experienced. 15. I can’t explain the situation. It’s complicated.
Dẫn từ từ 8,96 lít H2 (đktc) qua m gam oxit sắt FexOy nung nóng. Sau phản ứng được nước và hỗn hợp A gồm 2 chất rắn nặng 28,4 gam. Biết một trong 2 chất phản ứng hết và coi phản ứng chỉ tạo ra một sản phẩm. 1. Lập công thức phân tử của oxit sắt, biết A có chứa 59,155% khối lượng sắt đơn chất. 2. Tìm giá trị m?
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