Đáp án + Giải thích các bước giải:
( 19x + 2 . 5^2 ) : 14 = ( 13 - 8 . 2 ) - 4^2
= ( 19x + 2. 5^2 ) : 14 = 5^2 - 4^2
= ( 19x + 2 . 5^2 ) : 14 = 25 - 16
= ( 19x + 2 . 5^2 ) : 14 = 9
= ( 19x + 50 ) : 14 = 9
= 19x + 50 = 14 . 9
= 19x + 50 = 126
= 19x = 76
= x = 76 : 19
= x = 4
chúc bạn học tốt và xin hay nhất
Giải thích các bước giải:
`a)`
`(19x + 2 . 52) : 14 = (13 - 8)^2 - 42`
`⇒ (19x + 104) : 14 = 5^2 - 42 = -17`
`⇒ 19x + 104 = -238`
`⇒ 19x = -342`
`⇒ x = -18`
`Vậy x = -18`
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Đặt hai câu với từ miệng trong đó có một câu có từ mẹ mang nghĩa gốc một từ cũng từ miệng mà nghĩa chuyển
I. PRONUNCIATION 1. Pick out the word which has the /ɑː/ sound. talk task traffic party father car class disaster flat narrow half headmaster hard small charge 2. Choose the word in each group which hasn't got the /ʌ/ sound. 1. month Sunday much turn subject 2. discuss busy study love sun 3. company suffer customary sure cousin 4. further result understand lunch just 5. lovely July wonderful hundred must 3. Choose the word whose stress is on the second syllable. acceptable organize different semester tomorrow holiday convenience apologize complain cinema relax Geography enthusiastic imagine motorbike important entertainment worry enjoy experience
2. Use cues below to make each sentence meaningful. 1. you/ like/ come/ a lecture/ American literature/ tonight? 2. She/ be/ very angry/ him/ for/ forget/ lock/ back door. 3. It/ be/ important/ be/ school/ on time. 4. I/ decide/ not/ have/ birthday party/ this year. 5. Last night, she/ go/ café/ have something/ eat? 6. He/ need/ relax more/ because he/ look/ really stressed. 7. They/ go on/ talk/ class/ until you/ tell/ stop. 8. Remember/ say goodbye/ before/ leave/ tomorrow.
chỉ cần viết cân bằng phương trình của câu đó thôi là được
1. Rewrite the sentences without changing the original meaning, beginning with the words given. 1. It's not a good idea to travel during the rush hour. It's better to avoid 2. The student said it was true that he didn't do homework before class. The student admitted 3. It would be a good idea to go on a picnic this Sunday. We suggest 4. My father said I could use his car. My father allowed 5. I think you should tell the truth. I want you 6. My lawyer said I shouldn't say anything to the police. My lawyer advised 7. Tom thinks that working is better than doing nothing. Tom prefers 8. It is a 15-minute walk to school. Every day I spend 9. She feels very hungry so she can't go on studying. She is too 10. She wishes she hadn't lied to me. She regretted 11. She is intelligent so she can understand this perfectly. She is intelligent enough 12. She finished all the housework in 2 hours. It 13. The garden hasn't been swept yet. The garden still needs 14. I wonder if you would be kind enough to help me put the armchairs away. Do you mind 15. Do you have any difficulty understanding him? Do you find it
Cho đậu hà lan thuần chủng thân cao, quả tròn lại với đậu hà lan thân thấp quả bầu dục kết quả cho ra F1 toàn là thân cao quả tròn, sau đó cho F1 tự thụ phấn. Em hãy viết sơ đồ lai và tổng kết kiểu hình, kiểu gen ở F2
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