x2=6y2+1
help me, you can have a tick
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G2
3
20 tháng 4 2022
\(x\times\dfrac{20}{11}=\dfrac{1}{1}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{11}\\ x\times\dfrac{20}{11}=\dfrac{10}{11}\\ \Rightarrow x=\dfrac{1}{2}\)
20 tháng 4 2022
Ta có :
=> X x 20/11 = ( 1 - 1/3 ) + ( 1/3 - 1/5 ) + ( 1/5 - 1/7 ) + ( 1/7 - 1/9 ) + ( 1/9 + 1/ 11 )
=> X x 2/11 = 1 - 1/11 = X x 1/11 = 11/11 - 1/11
=> X x 20/11 = 10/11
=> X = 10/11 : 20/11
=> X = 1/2
TP
4 tháng 3 2022
1. I am planting some roses. ____ help me get some water? A. Have you B. Can you C. Should you D. Do you 2. I’m ___________ my garden now. A. waters B. watering C. watered D. water 3. Can you______ the teacher that question? A. Asked B. asks C. asking D. ask 4. – “How often do you________ to music?” – “Every Sunday. A. listen B. read C. write D. play 5. My sister________ born in 1998. A. Is B. are C. was D. were 6. – “Can Bob play chess?” – “No, he__________ ” A. doesn’t B. does C. can D. can’t 7. “What__________________ your brother often ________ in the evening?” A. do – do B. does-does C. does – do D. do-does 8. My sister_________at school last Sunday. A. wasn’t B. weren’t C. is D. were 9. _________ some people waiting for you at the door. A. There wasn’t B. There weren’t C. There was D. There were 10. We are going to go________________ this Sunday afternoon. We like water very much. A. running B. swimming C. skiing D. skating
14 tháng 3 2017
Điền từ thích hợp vào ô trống:
1: Can you hear the noise of the motorbike out side the street?
2: We must have disciption and road signs help us.
3: Can you do me a favour?
23 tháng 7 2019
1) She asked me if I was comfortable
2) Tom asked me how he could help me
3) Paula asked Jack if he could help her
4) Mai asked Mary where she had been all morning
5) Bod asked me what Hoa's native language was
6) Tom told us he didn't understand what we was saying
7) Mrs. Chi said they would spand their holiday in Da Lat the following month
# kiseki no enzeru #
hok tốt
KY
18 tháng 12 2021
Old man: Can you please do me a favor? Ba: ...............
A. Yes. Please help me B. Sure. How can I help you?
C. Yes, you can D. No, you can't
Câu 7. The children can look after ............................... for a few days.
A. them B. they C. themself D. themselves
Câu 8. My grandfather used ____________ us to the zoo when he was alive.
A. took B. to take C. taking D. take
Câu 9. Choose the underlined word or phrase in each sentence that needs correcting.
The armchair is in the living-room among the television and the sofa.
A B C D
Câu 10. My hometown is getting more modern and .....................
A. more noisy B. noisier C. noisiest D. more noisier
Câu 11. The water wasn't ____________ in.
A. clear enough for swimming B. enough clear for swimming
C. enough clear to swim D. clear enough to swim
Câu 12. Choose the word that has the underlined part pronounces differently
A. looked B. phoned C. missed D. watched
Câu 13. Don't come in. Pleased wait ____________ for your turn.
A. outside B. inside C. downstairs D. upstairs
Câu 14. We must be there....................7.30 and 10.30.
A. between B. at C. after D. before
Câu 15. His father is very proud ________ him.
A. on B. about C. of D. with
Câu 16. They …………….. in that house for 3 years.
A. have lived B. live C. lived D. are living
Câu 17. Choose the word that has a different stress pattern from the others.
A. plentiful B. generous C. volunteer D. sociable
E
1 tháng 9 2021
1. If I (be) were you, I wouldn't worry about going to university.
2. If the doctor can't help me, I (go)will go somewhere else.
3. Will you phone me if there (be) are any problems?
4. If you drove more carefully, you (not have) wouldn’t have so many accidents.
5. If he (get) got up earlier, he'd get to work on time.
6. If we (have).had.................more time, I could tell you more about it.
7. If this house costs too much, I (buy)..will buy.............a smaller one.
8. If you (sell).......sold ....... more products, you'd earn more money.
9. What would you do if you suddenly (win)won.........half a million pounds?
10. His car would be a lot safer if he (buy)bought..........some new tyres.
What do you need?