Giúp mình vs🤭
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HT
16
13 tháng 6 2023
3: góc AMN=góic ACM
=>AM là tiếp tuyến của đường tròn ngoại tiếp ΔECM
=>góc AMB=90 độ
=>Tâm o1 của đường tròn ngoại tiếp ΔECM nằm trên BM
NO1 min khi NO1=d(N;BM)
=>NO1 vuông góc BM
Gọi O1 là chân đường vuông góc kẻ từ N xuống BM
=>O1 là tâm đường tròn ngoại tiếp ΔECM có bán kính là O1M
=>d(N;tâm đường tròn ngoại tiếp ΔECM) nhỏ nhất khi C là giao của (O1;O1M) với (O) với O1 ;là hình chiếu vuông góc của N trên BM
NT
1
NN
0
K
ai giúp mình vs mình đang cần gấp
0
CT
1
DT
Đỗ Thanh Hải
CTVVIP
4 tháng 12 2021
1 If I were Quang, I would study hard for the upcoming exam
2 The river in which the children prefer to swim is clean
3 The car which Mrs Brown has just bought is fast and modern
4 Mr Nick suggested changing the date of the meeting until next month
5 My nephew enjoyed feeding fish every morning
6 You won't pay much per month if you save energy
7 If the car weren't too expensive for us to buy
8 In spite of the heavy traffic, they got there in time
9 The movie which the kids were watching is interesting
sau đăng nhớ tách bài ra nhé
Ex 1
1 am
2 doesn't study
3 aren't
4 Does he have
5 have
6 Does she live
7 are
8 Does my sister work
9 Do dogs like
10 lives
11 rains
12 fly
13 doesn't fry
14 closes
15 tries - don't think
16 passes
17 is - watch
18 has
19 leaves
20 has to
21 play
22 drinks
23 does she speak
24 are spoken
25 are not polished
26 rains
27 arrives
28 starts
29 come
30 does he do
Ex 2
1 is living
2 isn't having
3 am studying
4 is designing
5 is reading
6 is studying - is listening
7 are running
8 are having
9 is playing
10 are watching
11 is staying
12 is always forgetting
13 is being washed
14 is riding
15 isn't being taken
16 are hanging
Ex 3
1 is listening
2 rains
3 works - isn't working
4 is running - wants
5 speaks - comes
6 is coming- are meeting
7 Do - go - do - stay
8 is holding - smell
9 is snowing - snows
10 swims - doesn't run
11 Do - enjoy - am having
12 don't know
13 are - doing - am staying
14 think - looks
15 live- am staying
16 am driving
17 are lying
18 listen - are - listening
19 doesn't understand - are talking
20 does - weigh - looks
Ex 4
1 stayed
2 didn't go
3 had
4 Was my ...
5 visited
6 felt
7 bought
8 Did Lan and Mai see
9 Did Trung eat
10 Did they talk
11 returned
12 didn't think
13 went
14 drove
15 arrived - was
16 had
17 came
18 told
19 walked
20 visited - was
21 bought
22 moved
23 didn't go
24 Did she get