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Bài 1 : Chia đông từ trong ngoặc .
1.What are there to drink for dinner?
2. We are tired and we'd like to sit down.
3. What does your sister want? - She wants a cold drink .
4. I am not hungry and I don’t want any rice .
5. Are there any bananas ?
6. What does Mr Minh feel now ?
5 Are there any bananas?
2 were - to sit
4 am not , don't want
( mấy câu kia mk thấy đề sao sao ý )
Tìm x, biết:
a. 12 + x = 122
=> x=122-12
=> x= 110
b. | x | + 4 = 8
=> /x/=8-4
=> /x/=4
=> x={4;-4}
c. 3x - 5 . 32 = 32 . 4
=> 3x=32.(4+5)
=> 3x=32.32
=> 3x=34
=> x=4
a)
\(12+x=122\)
=> \(x=110\)
Vậy \(x=110\)
b)
\(\left|x\right|+4=8\)
\(\Rightarrow\left|x\right|=4\)
\(\Rightarrow\left[\begin{array}{nghiempt}x=4\\x=-4\end{array}\right.\)
Vậy x=4 ; x = - 4
c)
\(3^x-5.3^2=4.3^2\)
\(\Rightarrow3^x=3^2\left(4+5\right)\)
\(\Rightarrow3^x=3^4\)
=> x=4
Vậy x=4
1. Your school / city
Where is your school?
It is in a city.
2. His living room / 1 st floor
Where is his living room?
It is in the first floor.
3. He / 7
Which grade is he studying?
He is in grade 7.
4. Her brother / 12A
Which is her brother class?
It is 12A.
5. Nam 's class / 3 rd floor
Where is Nam's class?
It is on the third floor.
6. her house / Trang Tien street
Where is her house?
It is on Trang Tien Street.
7. Your room / 2 nd floor
Where is your room?
It is on the second floor.
8. Lan's room / 4 th floor
Where is Lan's room?
It is on the fourth.
9. Nga's house / country
Where is Nga's house?
It is in a country.
10. he/ class 9d
Where is he studying?
He's in class 9d.
1.Where is your school?
2.Where is his living room?
3.Where is he?
4.Where is her brother?
5.Where is Nam's class?
6.Where is her house?
7.Where is your room?
8.Where is Lan's room?
9.Where is Nga's house?
10.Where is class 9d?
1.
3A= 3(3+32+ ...+ 32017)
3A= 32 + 33 + .... + 32018
Lấy 3A - A = (32 + 33 +...+ 32018) - (3+32+...+32017)
2A = 32018 - 3
2A+3 = 32018 - 3 +3 = 32018
=> 2A+3 là một lũy thừa của 3
-292 - { 1357 + 4 [( -8)3 + ( 18 - 146 ) : ( 7 -3 )2 ]}
= ( - 841 )- { 1357 + 4 . [ ( -512 ) + ( 18 - 146 ) : 16
= ( - 841 ) - { 1357 + 4 . [ ( -512 ) + ( - 128 ) : 16 ]}
= ( - 841 ) - { 1357 + 4 . [ ( -512 ) + ( - 8 ) }
= ( - 841 ) - { 1357 + 4 . ( - 520 ) }
= ( - 841 ) - { 1357 + ( -2080 ) }
= ( - 841 ) - ( -723 )
= ( - 118 )
, .
...1.I...am very lucky . I go to a wonderful . country...2.... I enjoy it very much . I don't have much . homework...3....so I have plenty of time to .. do..4.... interesting things . I do a lot of ... sport..5..... I go to an exercise class , go .. to..6.... dance classes , and I swim . twice..7.... a week . I love going to the.. movies..8.... with my friends . Some times we have parties . On the . weekend...9.... we often go on cycle rides into the fresh air of the .. school..10.... .
EX1:Fill in the blank of the following passege with ONE suitable word.
Bloom lives (1) ...IN........ a village in Africa. Her day (2)...BEGINS...... at 5 o'clock. She (3)....GETS...... up and she walks three kilometers (4).....TO... the river. She collects (5) .....SOME..... water, and she carries it back (6).....TO.... her house. (7).....THE...... water is very heavy. It isn't clean but there (8)...ISN'T........any water in their village.Bloom doesn't (9)...GO....... to school. She can't read or write.She helps her mother (10) ....IN...... the house.
EX2:Ewrite each of the sentences below in such a way that its meaning is similar.
1.The Amazon River is longer than the Mekong River.
=>The Mekong River is shorter than the Amazon River
2.How long is the road?
=>What is the length of the road?
3.The girls are beautiful.
=>They are beautiful girls
4.Thuy is the fattest girl in my class.
=> No one in my class is fatter than Thuy
5.There is a lot of rain in Viet Nam.
=>Viet Nam has a lot of rain
1.The Amazon River is longer than the Mekong River.
=>The Mekong River is smaller than the Amazon River
2.How long is the road?
=>What is the length of the road?
3.The girls are beautiful.
=>They are beautiful girl.
4.Thuy is the fattest girl in my class.
=> No one is fatter than Thuy in my class.
5.There is a lot of rain in Viet Nam.
=>Viet Nam has a lot of rain
a) ( 195 - x3 ) : 7 + 105 : 102 = 28 . 22
=> (195 - x3 ) : 7 + 1000 = 1024
=> (195 - x3 ) : 7 = 1024 - 1000 = 24
=> 195 - x3 = 24 . 7 = 168
=> x3 = 195 - 168 = 27
=> x = 3 hoặc x = - 3
Vậy : x = 3 hoặc - 3
b) 3 . ( x2 - 65 ) + 15 = 810 : 88 - 1690
=> 3 . ( x2 - 65 ) + 15 = 64 - 1 = 63
=> 3 . ( x2 - 65 ) = 63 - 15 = 48
=> x2 - 65 = 48 : 3 = 16
=> x2 = 16 + 65 = 81
=> x = 9 hoặc x = - 9
Vậy : x = 9 hoặc x = - 9
Ta có :
\(A=75\left(4^{10}+4^9+...+1\right)+25\)
\(\Rightarrow A=75.4^{10}+75.4^9+....+75.4+75.1+25\)
\(\Rightarrow A=300.4^9+300.4^8+....+300+100\)
=> A chia hết cho 100
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