1.What is the most popular activity children often do in the countryside?
2.Where do you like living?
3.Do you livein the city or in the countryside?
4.What do you like about their nomadic life?
5.How is the life in the countryside?
K
Khách
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29 tháng 9 2019
\(\frac{\left(x-2\right)^2}{12}-\frac{\left(x+1\right)^2}{21}=\frac{\left(x-4\right)\left(x-6\right)}{28}\)
\(\Leftrightarrow\frac{7\left(x-2\right)^2}{84}-\frac{4\left(x+1\right)^2}{84}=\frac{3\left(x-4\right)\left(x-6\right)}{84}\)
\(\Leftrightarrow7\left(x-2\right)^2-4\left(x+1\right)^2=3\left(x-4\right)\left(x-6\right)\)
\(\Leftrightarrow7\left(x^2-4x+4\right)-4\left(x^2+2x+1\right)=3\left(x^2-10x+24\right)\)
\(\Leftrightarrow7x^2-28x+28-4x^2-8x-4=3x^2-30x+72\)
\(\Leftrightarrow7x^2-4x^2-3x^2-28x-8x+30+28-4-72=0\)
\(\Leftrightarrow-6x-48=0\)
\(\Leftrightarrow-6x=48\)
\(\Leftrightarrow x=-8\)
Vậy tập nghiệm của PT là : \(S=\left\{-8\right\}\)
Chúc bạn học tốt !!!
29 tháng 9 2019
\(\(\frac{\left(x-2\right)^2}{12}-\frac{\left(x+1\right)^2}{21}=\frac{\left(x-4\right)\left(x-6\right)}{28}\)\)
\(\Leftrightarrow\frac{7\left(x^2-4x+4\right)}{84}-\frac{4\left(x^2+2x+1\right)}{84}=\frac{3\left(x^2-6x-4x+24\right)}{84}\)
\(\Rightarrow7x^2-28x+28-4x^2-8x-4=3x^2-30x+\frac{72}{ }\)
\(\Leftrightarrow3x^2-36x+24=3x^2-30x+72\)
\(\Leftrightarrow-6x=48\Leftrightarrow x=-8\)
29 tháng 9 2019
Answer:
1.I need............... pair of shoes: these are falling apart.
=> I need........another......pair of shoes; these are falling apart.
2.There was a good film on TV ......................night.Did you see it?
=> There was a good films on TV.....in the..... night.Did you see it.
3.We're leaving now;.................will join us later.
=> We're leaving now;....another...will join us .
2 tháng 10 2019
Fill in ( the ) other(s), each other, every other or another
1.I need ........another......... pair of shoes; these are falling apart
2.There was a good film on TV..................in the......night. Did you see it?
3.We're leaving now;....onother............will join us later
4.My mother telephones........every other.......day to see how I am
5.He has to write...........another.....two pages before the arle is finished
29 tháng 9 2019
1. What is the price of these costumes?
-> How much ...are these costumes?........................
2. His brother spent two hours doing his homework (make a question for the underlined parts)
-> .......How long did his brother spend doing his homework?......................................
3. ethnic minorities/ still/ traditional/ Some/ life/ in/ ways/ mountains/ their/ the/ keep/ of/ .
-> ........Some ethnic minorities in the mountain still keep their traditional ways of life ......................................
4. The cultural heritage of the ethnic peoples in Vietnam is very rich.(make a question for the underlined parts)
-> ...........How is .the cultural heritage of the ethnic peoples in Vietnam?.....................................
HN
29 tháng 9 2019
In spite of their mother’s unhappiness, they held a party.
-Though ……their mother was unhappy, they held a party…………………..
3.We took many photographs even thought the sky was dark.
-We took may photographs despite the dark sky…………………
4.Despite her madness, he wanted to make friends with her.
-Though…she was mad, he wanted to make friends with her………………
5.In spite of her poor memory, she tried to recount what happened to the police.
-Although……her memory was poor, she tried to recount what happened to the police…………
6.He passed the test even though he was frequently absent from class.
-He passed the test in spite of……his frequent absence from class………………………
1 tháng 10 2019
Because he got up early he wasn't late for the first train
\(\Rightarrow\)Because of getting up early, he wasn't late for the first train
HB
28 tháng 9 2019
put the verbs in the brackets into the correct tense and form: 1. The house was very quiet when I (get)..got.. home. Everybody (go) .had gone..to bed 2. We (tell).were told..(sit)..to sit..down and fassten our seat belts when I got on board 3. As soon as the light turned red, she (stop)..stopped. the car 4.A: The weather is a lot better today B: It said on the radio it ( probably rain)..will probably rain... later 5. A: Do you know them? B: Yes, they live in the same street as me but I ( never speak)....have never spoken... to them 6.I (wait) ..was waiting ...(pay)..to pay. at the checkout when I (noe)...noed.. a strange - looking man 7. Before Jennifer won the lottery, she ( not enter)...hadn't entered.... any kind of contest 8. Who was the woman in red dress?Did you know? - No, I (not see)....haven't seen.... |
30 tháng 9 2019
put the verbs in the brackets into the correct tense and form: 1. The house was very quiet when I (get)..got.. home. Everybody (go) ..had gone.to bed 2. We (tell)were told...(sit)...to sit.down and fassten our seat belts when I got on board 3. As soon as the light turned red, she (stop).stopped.. the car 4.A: The weather is a lot better today B: It said on the radio it ( probably rain)...will probably rain.. later |
28 tháng 9 2019
1.A.toothache B.sandwich C.cartoon D.chocolate
2.A.aerobics B.activity C.badminton D.basketball
3.A.police B.gymnast C.teacher D.farmer
4.A.diffrent B.dangerous C.diffcult D.delicous
5.A.visit B.unload C.receive D.correct
28 tháng 9 2019
1.A.'toothache B.'sandwich C.car'toon D.'chocolate
2.A.'aerobics B.ac'tivity C.'badminton D.'basketball
3.A.po'lice B.'gymnast C.'teacher D.'farmer
4.A.'diffrent B.'dangerous C.'diffcult D.deli'cious
5.A.'visit B.un'load C.re'ceive D.cor'rect