giải giúp mình đề này ạ
K
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Những câu hỏi liên quan
TL
1
K
27 tháng 5 2021
Part 1:
1. with
2. does
3. after
4. if
5. where
6. I won't
Part 2:
1B 2F 3A 4E 5C 6D
Part 3:
1. invited
2. will play
3. have just won
4. be cleaned
5. to take
6. beautifully
7. impression
Part 4:
1. read -> reading
2. disappointing -> disappointed
3. environment -> environmental
4. who -> that
Part 5:
1. the bad weather
2. are made to study
3. were good at learning
4. going to the English
TL
2
QN
27 tháng 5 2021
Part 1 :
1. so
2. forward
3. which
4.didn't
5. if
6. although
Part 2 :
1.C
2.E
3.A
4.F
5.B
6.D
QN
27 tháng 5 2021
Part 3 :
1. eruption
2.compelling
3.badly
4.natural
5. not to stay
6. didn't work / has had
8. would tell
Part 4 :
1. didn't => haven't
2. happily => happy
3. complains => should complain
4. on => off
18 tháng 5 2021
part 1
1 about
2 have
3 after
4 because
5 which
6 if
part 2
1a 2c 3g 4d 5b 6f
part 3
1 have mentioned
2 will reduce
3 to turn
4 spending
5 to be taken
6 modernize
7 unpolluted
8 destruction
part 4
1 although -> because
2 can -> could
part 5
1 which was read
2 he tried hard
3 they had enough money
4 will be held in
part 6
1 that
2 frequently
3 cause
4 constant
part 7
1T 2F 3F 4F
19 tháng 5 2021
1.θ
2.Although
3.doen't
4.on
5.Although
6.or
Part 2:
1-A
2-F
3-B
4-C
5-D
6-E
Part 3:
1.beautifully
2.was watching
3.didn't finish
4.was built
5.is lying
6.surprisingly
7.left
8.independence
19 tháng 5 2021
Part 5:
1.The policeman suggested checking everything once more
2.The castle is said that to be built in the 19th century
3.We climbed on top of the tower and we had a beautiful view from there
4.She told me she would go to China next week with her parents
NN
0
19 tháng 5 2021
Part 1
1 if
2 after
3 that
4 so
5 should
6 from
Part 2
1b 2e 3a 4f 5c 6d
Part 3
1 conservationists
2 to take
3 hasn't provided
4 works
5 disappointed
6 achievement
7 polluted
8 dissolve
Part 4
1 will get -> get
2 amazing -> amazed
Part 5
1 use fresh water economically
2 school because the bus
3 they should keep
4 which is in this
Part 6
1 fond
2 watching
3 listened
4 or
Part 7
1T 2F 3T 4F
Câu 5:
Áp dụng bất đẳng thức AM - GM ta có: \(\dfrac{P}{1152}=\dfrac{\sqrt{a-1}}{a}+\dfrac{\sqrt{b-9}}{b}+\dfrac{\sqrt{c-16}}{c}=\dfrac{\sqrt{a-1}}{\left(a-1\right)+1}+\dfrac{\sqrt{b-9}}{\left(b-9\right)+9}+\dfrac{\sqrt{c-16}}{\left(c-16\right)+16}\le\dfrac{1}{2}+\dfrac{1}{6}+\dfrac{1}{8}=\dfrac{19}{24}\Rightarrow P\le912\).
Đẳng thức xảy ra khi a = 2, b = 18, c = 32.
Vậy...