Bài `7 :`
`a,` Ta có `: 7^14 = 7^( 2 . 7 ) = ( 7^2 )^7 = 49^7`
Vì `50^7 > 49^7` nên `50^7 > 7^14`
Vậy `, 50^7 > 7^14 .`
Ta có:
`7^14 = (7^2)^7 = 49^7`
Mà: `49^7 < 50^7`
`=> 7^14 < 50^7`
Vậy `7^14 < 50^7`
giải thích chi tiết có ngay hay nhất nhé
2 câu trên là dùng so sánh hơn hoặc là hơn nhất nha , còn bài dưới là điền từ . Các bạn giúp mình nhé
to get / Sunday / married / last / decided / they/. ……………………………………………………………………………… 2. learning / / we / / Maths /are / the / at / in/library/ the/ moment. ……………………………………………………………………………………………… 3. I / to my roommates / ago / didn’t / three months / or call / write. …………………………………………………………………………………………… 4. play/go out/ chess / her children / in the sitting room /will/ she/ when/ ./ …………………………………………………………………………………………… 5. her composition / didn’t finish / last weekend / Marria / …………………………………………………………………………………… 6. / hours/week/often/does/how/he/many/a/work? →............................................................. 7/ not/American/uniforms/do/usually/school/wear/students. ……………………………………………………………………………………………… 8. I was / we lived / a child / when/ in HoChiMinh city. ……………………………………………………………………………………………… 3/ Huong/be/November20th /,/twelve/on/will/Saturday. ………………………………………………………………………………………………………………………………………. 10. lunch / o’clock / going / it’s /and / the / twelve / we’re / to /room
What animal do you want to see ? ⇒ What your Phone number? ⇒ what does he look like? ⇒ * trả lời câu hỏi* *rồi nói câu này trả lời cộng gì ...(vd: tube+v_ing)
Cho hình chóp $S.ABCD$ có đáy là hình vuông cạnh $a$ ,$SA=a$ và vuông góc với đáy $(ABCD)$ .Gọi $M$ là trung điểm của $BC$.Tính cosin của góc giữa hai mặt phẳng $(SMD)$ và $(ABCD)$.
giải giúp mình với mình đang cần gấp
VI. Rewrite the sentences using the given words. 29. There are three floors in my new house. My new house.......................................................................................................................... 30. I cycle to school every day. I................................................................................................................................ 31. The post office is in front of my house. My house............................................................................................................. 32. My teacher is taller than my mother. My mother............................................................................................................
1980:2-50+60 2580+90x5 2009+61:3
các bạn lm giúp mik bai 1b; nha sẽ vote đầy đủ can gap aj
I. Rewrite each sentence or question so it has the same meaning 1. Although Tom was a poor student, he studied very well. =In spite of 2. Mary could not go to school because she was sick. =Because of 3. Although the weather was bad, she went to school on time. =Despite 4. My mother told me to go to school although I was sick. =In spite of 5. Because there was a big storm, I stayed at home. =Because of 6. Tom was admitted to the university although his grades were bad. =Despite 7. Although she has a physical handicap, she has become a successful woman. =Despite 8. In spite of his good salary, Tom gave up his job. =Although 9. Though he had not finished the paper, he went to sleep. =In spite of 10. In spite of the high prices, my daughter insists on going to the movies. =Even though I Give the correct form of the word given to complete the sentence. 1. Is she_enough to run one kilometer? (GOOD) 2. “Ow! Be careful with that coffee." - “Look, now I have a_(BURNING) _on my arm” 3. Rob has a of 39.5°C(TEMPERATE) 4. Don't eat so quickly. You'll get a(TEETH) 5. I have a_ in my back. I'm going to lie down.(PAINFUL) 6. That's a bad__. Why don't you have a glass of water? (COUGHING) 7. “I have _ _.” - “Why don't you telephone the doctor?” (STOMACH) 8. My arm _after the table tennis match(HURT) 9. "I have a.” - "That's because you watch too (HEAD) much TV.” 10. Lan was absent from class because of her(SICK) 11. I have an - with my doctor at 5p.m.(APPOINT) 12. She is still receiving a__treatment in a hospital. (MEDICINE) 13. People fellwhen they catch a common cold. (PLEASE) 14. She's to seafood. So when she eats them, she will (ALLERGY) have stomachache problems. 15. You should choose foods and drinks to prevent (CARE) some dangerous diseases. 16. He continues _because he is catching a flu.(SNEEZE) 17. He can reduce his serious when he relaxes in time and (DEPRESS) does exercise regularly. 18. If you provide yourself with enough vitamins, you will make (CONCENTRATE) a better on your work or study. 19. I got _during my beach vacation.(SUNBURN) 20. Lack of vitamin E can cause skin diseases and(TIRED) 1. Put the verbs in brackets in the correct tense form . 1. Nam looks brown. He was on holiday last week. He (get). .sunburn 2. Getting plenty of rest is very good. It (help)......... ...you to avoid depression, 3. The Japanese (eat)...........a lot of fish so they are very intelligent. 4. If you wash your hands more, you (have)................. less chance of catching flu. 5. Eating carrots regularly (help).......you see better. 6. It is very hot outside. Please (wear).....................a sun hat when you go out. 7. Do more exercise and you (feel).....healthier. 8. I don't want (be)..... tired tomorrow so I go to bed early . 9. Nowadays, I don't feel well. I often (feel)............................sick and weak. 10. People who (smile).... more are happier and they live longer. II. Put the verbs in brackets in the correct tense form . 1. It is important (eat) well . 2. It (be)_ _very cold today. You should wear your warm clothes when you (go)out to prevent cold 3. Do morning exercise every day and you'll(feel better. 4. I have a lot of homework to do this evening, so I (not have) time to watch the football match . 5. (Eat) dunk food and inactivity (be) the main causes of obesity . 6. I (have)__a headache and I need to rest more . 7. I (have) a toothache so I have to/ seethe dentist. 8. I have to take medicines because I (be) sick. 9. Japanese (eat) more fish instead of meat, so they (stay) more healthy
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến