Tìm lỗi sai ở câu :
Do they studens in Nam Tam secondary school?
Cho mình với
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1. The book is ___ the table.
A. in B. on C. at D. under
2. The cat is hiding ___ the sofa.
A. behind B. on C. over D. between
3. There is a painting ___ the wall.
A. in B. under C. on D. above
4. The shoes are ___ the bed.
A. behind B. under C. between D. in
5. The clock is ___ the TV and the window.
A. under B. between C. next D. behind
6. The children are sitting ___ the floor.
A. in B. on C. over D. at
7. There is a lamp ___ the table.
A. at B. behind C. on D. into
8. The picture is hanging ___ the bed.
A. next B. above C. behind D. between
9. The trash can is ___ the corner of the room.
A. on B. in C. at D. under
10. The dog is sleeping ___ the table.
A. over B. in front C. under D. between
A. next to B. in front C. at D. between
20. The picture is ___ the sofa and the lamp.
A. in B. next C. between
a: |3x-5|+|2x+3|=7(1)
TH1: \(x<-\frac32\)
=>2x+3<0; 3x-5<0
(1) sẽ trở thành: \(-2x-3-3x+5=7\)
=>-5x+2=7
=>-5x=5
=>x=-1(loại)
TH2: \(-\frac32\le x<\frac53\)
=>2x+3>=0; 3x-5<0
(1) sẽ trở thành: 2x+3-3x+5=7
=>8-x=7
=>x=1(nhận)
TH3: \(x\ge\frac53\)
=>2x+3>0; 3x-5>=0
(1) sẽ trở thành: 2x+3+3x-5=7
=>5x-2=7
=>5x=9
=>\(x=\frac95\) (nhận)
b: |x|+|x+2|=3(2)
TH1: x<-2
=>x+2<0; x<0
(2) sẽ trở thành: -x-2-x=3
=>-2x=5
=>\(x=-\frac52\) (nhận)
TH2: -2<=x<0
=>x+2>=0; x<0
(2) sẽ trở thành x+2-x=3
=>2=3(vô lý)
TH3: x>=0
=>x+2>0; x>=0
(2) sẽ trở thành: x+2+x=3
=>2x+2=3
=>2x=1
=>\(x=\frac12\) (nhận)
c: |3x-5|=|x+2|
=>\(\left[\begin{array}{l}3x-5=x+2\\ 3x-5=-x-2\end{array}\right.\Rightarrow\left[\begin{array}{l}2x=7\\ 4x=3\end{array}\right.\Rightarrow\left[\begin{array}{l}x=\frac72\\ x=\frac34\end{array}\right.\)
1. What does Jim do in his free time?
2. How often does he play volleyball?
3. When did you start your hobby?
1. What does Jim usually do in his free time?
2. How often does he play volleyball?
3. When did you start your hobby?
Phần Writing: 2. The bakery is to the left of my house. → My house is to the right of the bakery.
3. Mr Minh has a son, Trung. → Mr Minh is Trung's father.
2 My house is to the right of the bakery
3 Mr Minh is Trung's father
= (37,5.6,5 + 3,5.37,5) – (7,5.3,4 + 6,6.7,5)
= 37,5(6,5 + 3,5) – 7,5(3,4 + 6,6)
= 37,5.10 – 7,5.10
= 375 – 75 = 300
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16\(x\) - 15\(x\) = 19
\(x.\left(16-15\right)\) = 19
\(x\) = 19
Vậy \(x=19\)
Lỗi sai: studens \(\Rightarrow\) study
Sai ở studens phải là students .
Đặt lại câu :
Are they students at Nam Tam Secondary School ?
hoặc
Do they study in Nam Tam Secondary School?