Đáp án + Giải thích các bước giải:
`f)`
`(x-(4)/(5))^{2}=(9)/(4)`
`->` \(\left[ \begin{array}{l}x-\dfrac{4}{5}=\dfrac{3}{2}\\x-\dfrac{4}{5}=-\dfrac{3}{2}\end{array} \right.\)
`->` \(\left[ \begin{array}{l}x=\dfrac{23}{10}\\x=-\dfrac{7}{10}\end{array} \right.\)
Vậy `x\in{(23)/(10);-(7)/(10)}`
`g)`
`((2)/(3)+x)^{3}=1`
`->(2)/(3)+x=1`
`->x=(1)/(3)`
Vậy `x=1/3`
`f) (x - 4/5)^2 = 9/4`
`(x - 4/5)^2 ∈ {(3/2)^2; (-3/2)^2}`
`x - 4/5 ∈ {3/2; -3/2}`
`x ∈ {23/10; -7/10}`
`g) (2/3 + x)^3 = 1`
`(2/3 + x)^3 = 1^3`
`2/3 + x = 1`
`x = 1 - 2/3`
`x = 1/3`
Làm giúp em câu này nhé hứa vote 5s CTLHN
Task 2: Put the verbs in brackets into the correct form. (6 points) 1. David usually (listen) ______________ to music in his free time. 2. It often (rain) ______________ in the summer. 3. I’m sorry about losing that book. I (buy) ______________ you another one next week. 4. My grandparents don’t like (live) ________ in the city because it’s noisy and crowded. 5. Wait a minute, please. The concert (begin) ______________ soon. 6. Emily promises that she (not be) ______________ late for school tomorrow. 7. Oliver usually (do) ______________ his homework and (watch) ______________ TV at the same time. 8. The students (plant) ______________ some flowers in the schoolyard next week. 9. Anna and Jack (play) ______________ volleyball three times a week. 10. Jim enjoys (take) _____________ photos of himself and his friends.
Một người đem trứng ra chợ để bán. Sáng bán đc 3/5 số trứng mang đi. Chiều bán giảm đi 2 lần so với buổi sáng. Trong thùng còn lại 6 quả trứng. Hỏi người đó đã đem ra chợ bán bao nhiêu quả trứng. Gấp gấp nha tui cần gấp lắm
Mọi người ơi giúp mình giải bài này với ạ
Cho biết những điểm khác nhau cơ bản giữa ROM và RAM. Kẻ 2 cột
Giải phương trình $\sqrt{x + 2$\sqrt{x - 1 }$}$=2 làm hộ mình nhanh nha mik cần gấp ai xong trc mik cho 5s và ctlhn nha!!!
giúp em hết bài 2 với ạ,em cần gấp ạ :((,em cảm ơn
Có ai biết bài này ko cho minh hỏi với
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 1: “Remember to phone me when you arrive at the airport” “___________________” A. I remember B. I do C. I don’t D. I will Question 2: We should participate in the movements ________ the natural environment. A. organizing to conserve B. organized conserving C. organized to conserve D. which organize to conserve Question 3: Certificates provide proof of your . A. qualifications B. diplomas C. ambitions D. in order that Question 4: Prices continued to rise while wages remained low _________ the Government became increasingly unpopular. A. on condition that B. with the result that C. provided that D. bound Question 5: There is to be a serious energy crisis in the next century. A. reputed B. known C. foreseen D. qualities Question 6: interested in that subject, I would try to learn more about it. A. Were I B. If I am C. Should I D. I was Question 7: I’m not sure my brother will ever get married because he hates the feeling of being ________ A. tied in B. tied down C. tied up D. tied in with Question 8: Helen has just bought . A. some new black wool two scarves B. two black wool new scarves C. two new black wool scarves D. two scarves new wool black Question 9: Another will be drawn from the experiment. A. conclusion B. attention C. contrast D. inference Question 10: Joanne has only one eye, she lost A. other B. other ones C. another one D. the other Question 11: Don’t You’ve only just begun the course. A. put up B. get up C. give up D. grow up 3 years ago after falling on some broken glass. Question 12: No matter Mozart was an accomplished composer while still a child. A. how it seems remarkable B. how remarkable it seems C. how it remarkable seems D. how seems it remarkable Question 13: She is extremely competent and _________. A. Industrial B. indusứious C. industry D. industrialized. Question 14: “Is it all right if I use your bike?” -“______________” A. I don’t want to use your bike B. Sure, go ahead C. Sorry, no, I won’t do it D. Please accept it with my best wishes Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part that differs from the other three in the pronunciation in each of the following questions. Question 20: A. method B. father C. feather D. weather Question 11: A. chemistry B. children C. schooling D. character Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions. Question 22: A. political B. furniture C. yesterday D. ambulance Question 23: A. humorous B. educator C. organism D. contaminate
Giúp em nha cần gấp cảm ơn nhiều
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