There are 5 lamp posts along the street in front of Melissa' s house . The lamp posts are 5 m apart from each other . How far is the fourth lamp post from the first one ?
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16 tháng 6 2018
Bài 1: First task:
Let \(x\) be the number of sparrows on the first lamp post at first. (\(x\) is a positive integer).
\(\Rightarrow16-x\)is the number of sparrows on the second lamp post at first.
We have: \(x-2+3=16-x+2-3\Leftrightarrow2x=14\Leftrightarrow x=7\)
Hence there are 7 sparrows on the first lamp post at first, 9 sparrows on the second lamp post at first.
Bài 2: Second Task
We can find 2 students who were born on the same day.
There are 30 days in April and 31 students were born on that month. Apply the Dirichlet 's theorem, we can ensure that threre exists at least one day where 2 students were born.
22 tháng 1 2017
nếu tính ngoài lề luôn là 20 còn nếu không tính ngoài lề là 18
HY
10 tháng 11 2017
Mik ghi đáp án thôi nhé~
1. There is a small garden in my house
2. The computer is in front of the lamp
3. Our living room has an airconditioner and a ceiling fan
4. Peter's house is near the station
5. The dog is between the sofa and the wardrobe
6. There are two bookshelves in Tom's bedroom
7. The art gallery is opposite our school
Nhớ tick nhé~
RS
10 tháng 11 2017
1. There is a small gardren in my house.
2. The computer is in front of the lamp
2. Our living room has an airconditioner and a ceilling
4. Peter's house is near the station
5. The dog is between the sofa and the wardrobe
6. There are two bookshelves in Tom's bedroom
7. The art gallery is opposite our school
25 tháng 11 2021
Toán vs Anh đã khó mà nó còn mix lại với nhau nữa:)
VN
10 tháng 8 2018
😏😏 Điền (in, on, under, behind, near, from, till, of)
1 They are waiting. in .. front of the theater
2 The lamp is next..to ... the picture
3 The picture is..on ... the wall
4Can you see the cat..in .. the picture
5 The child is hiding ...on ... the tree
6 The armchairs aren't far from the televison. They are"..near ..the television
7 The water flows ......under .... the bridge
8 Hoa's father works....on. the farm
9 A nurse takes care ..of ..... sick people
10 The book are ....on .. the bookshelf
11His brother is next ...to ... my house
12 Jonh lives ...in .... America
13Her mother works hard ...from .... morning.to .. night
1t Her new house is different..from .. her old khe
15 The house is to the right ...of .. the store
TM
10 tháng 8 2018
😏😏 Điền (in, on, under, behind, near, from, till, of)
1 They are waiting....in.... front of the theater
2 The lamp is next..... the picture(câu này chỉ có to ms đúng thui)
3 The picture is...on.. the wall
4Can you see the cat..on.. the picture
5 The child is hiding ..behind.... the tree
6 The armchairs aren't far from the televison. They are".near...the television
7 The water flows ....from...... the bridge
8 Hoa's father works..in... the farm
9 A nurse takes care ...of.... sick people
10 The book are ..on.... the bookshelf
11His brother is next ...... my house (câu này cx cần có to)
12 Jonh lives ...in.... America
13Her mother works hard ...from.... morning.till.. night
1t Her new house is different.... her old khe
15 The house is to the right ..... the store
LD
5 tháng 6 2017
Điền vào chỗ trống với in , on , to , under , behind , near
1. They are waiting _in_____ front of the theater.
2. The lamp is next ___to____ the picture
3. The picture is ___on____ the wall.
4. Can you see the cat ___in___ the picture?
5. The child is hiding behind a tree.
6. The armchairs aren't far from the television. They are ___near___ the televison
7. The water flows ___under___ the bridge.
8. There are a sink , a tub and a shower ___in____ the bathroom
7 tháng 3 2018
Rewrite the sentences
1,my house is behind the post office
The post office . ..........is in front of my house..............
2,ba has a sister, lan
Lan. ...,..is ba's sister.......,
3,this boy is strong
This is..a strong boy ...
4,are there thirty two teacher in your school?
Does..........your school have thirty two teacher?.............
5,how much does the lamp cost?
How much . .........is the lamp?......,........
17 tháng 3 2016
ta có 12-11=1 côt thì 30 phút thì ông đi đc là 30+1=31 cây đc 31 cột
17 tháng 3 2016
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