$\lim \frac{4^{n+1}-5^{n+1} }{4^{n} +5^{n} }$
$= lim \frac{4.4^{n}-5.5^{n}}{4^{n}+5^{n} }$
$ = lim \frac{4.(\frac{4}{5}) ^{n} -5.1}{(\frac{4}{5}) ^{n}+1 }$
$= \frac{4.0-5}{0+1}$
$=-5$
mn giúp em với ạ 1. He suggested a double railway tunnel. A. to build B. built C. building D. that building 2. I can’t go on __________ here anymore. I want a different job. A. working B. to work C. work D. worked 3. Would you mind not _________ the radio on until I’ve finished with this phone call? A. turning B. to turn C. being turned D. to be turned 4. Julia’s children are used to _____ after school every day. They don’t have to walk home. A. picking up B. to pick up C. being picked up D. to be picked up 5. It’s not good to avoid _________ the teacher’s questions in class. A. answer B. answering C. answered D. to answer 6. It is no good _________ sorry for yourself. A. to feel B. feeling C. feel D. felt 7. Everyday, I spend two hours _________ speaking English. A. practise B. to practise C. practising D. practised 8. Tommy admitted _________ the rock through the window. A. throwing B. being throwing C. to throw D. to be thrown 9. Instead of ___________ about the good news, Tom seemed to be indifferent. A. exciting B. to excite C. being excited D. to be excited 10. I was reading my books, but I stopped __________ a programme on TV. A. reading to watch B. to read to watch C. to read for watching D. reading watching
Ai giupa mình nhanh nhất và đúng mình sẽ đánh giá 5 sao và cảm ơn nha, vote nữa nhá
em hãy sưu tầm 2 câu tục ngữ của người dân tộc mường và giải thichs ý nghĩa của 2 câu tục ngữ đó CÁC BẠN GIÚP MIK VS MIK ĐANG CẦN GẤP Ạ MIK CHO TRẢ LỜI HAY NHẤT CẢM ƠN CÁC BẠN NHIUEEF
Viết 3 công thức mở bài cho bài văn tả cảnh
Có 1 dd NaOH 20% (D=1,25g/ml) chứa 8g NaOH. Khối lượng và thể tích dd là bao nhiêu?
Combine the sentences, using relative pronoun. 11. My parents send their best wishes to you. You met them last month. ð ...................................................................................................................................................... 12. The girl was injured in the accident. She is now in hospital. ð ...................................................................................................................................................... 13. You’ve all met Michael Wood. He is visiting us for a couple of days. ð ...................................................................................................................................................... 14. He’s the person. His car was stolen. ð ............................................................................
Giúp mình vớiii chiều mình nộp rồi 😭
ax - ay + bx - by thay (x-y) là -4 , (a+b) là 15
3 dây dẫn thẳng dài, song song mang 3 dòng điện cùng chiều I1=I2=10A, I3=5A. Đặt lần lượt tại 3 điểm A,B,C trong không khí. TÍnh lực tổng hợp do I1 và I2 tác dụng lên 1m dày của dây I3 biết a. AB=BC=10cm, AC=20cm. b. A,B,C, tạo thành tam giác đều cạnh a=20cm
1.If I ( had)...a map I would have been all right. 2.the hens ( not get) ...into the house if you had shut the door. 3.If he had known that the river was dangerous he ( not try)... To swim across it. 4. If you ( speak) ... More slowly he might have understood you. 5. If he had known the whole story he ( not be) ...so angry. 6. If she had listened to my directions she( not turn) ...down the wrong street. 7. If had known that you were in hospital, I( visit)...you.
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