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odd one out:
A.kitchens B.beds C.posters D. lights
Chúc bạn học tốt!
tìm từ phát âm khác:
1.
a.maps
b.beds
c.rooms
d.taxis
2.
a.full
b.summer
c.sunny
d.sunday
3.
a.ride
b.night
c.river
d.tired
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
Dịch ra là: Ta có: 3A = 3. (1 + 3 + 32 + 33 + ... + 399 + 3100) (1 + 3 + 32 + 33 + ... + 399 + 3100) 3A = 3 + 32 + 33 + ... + 3100 + 31013 + 32 + 33 + ... + 3100 + 3101 Suy ra: 3A - A = (3 + 32 + 33 + ... + 3100 + 3101) - (1 + 3 + 32 + 33 + ... + 399 + 3100) (3 + 32 + 33 + ... + 3100 + 3101) - (1 + 3 + 32 + 33 + ... + 399 + 3100) ⇒⇒ A = 3101−123101−12 Vậy A = 3101−12
Mà đoạn 2A sai nhé bạn, sửa lại:
2A = 3101−13101−1 2A=-10001
A=-10001/2
A=-5000,5
Vậy A=-5000,5
tìm từ khắc với từ còn lại:
a) 1.fish 2.listen 3.time
b) 1.do 2. to 3. movies 4.go
c) 1.I 2. like 3.milk 4.die
d) 1. cold 2.close 3.hot 4.slow
e) 1.sea 2. tea 3 teather 4 weather
f) 1.chest 2.hand 3.head 4.toe 5.finger 6.big 7.noes
g) 1. table 2.chair 3 desk 4.couch 5.bench 6.hand
h)1.father 2.mother 3 sister 4.brother 5. people 6. uncle
i) 1. come 2. sit 3.desk 4.open 5. close 6. read 7.write 8. travel
a) 1.fish 2.listen 3.time
b) 1.do 2. to 3. movies 4.go
c) 1.I 2. like 3.milk 4.die
d) 1. cold 2.close 3.hot 4.slow
e) 1.sea 2. tea 3 teather 4 weather
f) 1.chest 2.hand 3.head 4.toe 5.finger 6.big 7.noes
g) 1. table 2.chair 3 desk 4.couch 5.bench 6.hand
h)1.father 2.mother 3 sister 4.brother 5. people 6. uncle
i) 1. come 2. sit 3.desk 4.open 5. close 6. read 7.write 8. travel
\(A=\left(2+\dfrac{1}{5}-\dfrac{2}{3}\right)+\left(3-\dfrac{4}{5}+\dfrac{2}{3}\right)-\left(1+\dfrac{7}{5}-\dfrac{3}{5}\right)\)
\(A=2+\dfrac{1}{5}-\dfrac{2}{3}+3-\dfrac{4}{5}+\dfrac{2}{3}-1-\dfrac{7}{5}+\dfrac{3}{5}\)
\(A=\left(2+3-1\right)+\left(\dfrac{1}{5}-\dfrac{4}{5}-\dfrac{7}{5}+\dfrac{3}{5}\right)+\left(-\dfrac{2}{3}+\dfrac{2}{3}\right)\)
\(A=4+\dfrac{-7}{5}+0\)
\(A=\dfrac{20}{5}+\dfrac{-7}{5}=\dfrac{13}{5}\)
- you must study hard in school.
- she mustn't say that with her teacher.
- you must study ENglish better.
- You mustn't play football in school yard.
You mustn't throw trash or draw on the walls.
- We mustn't pick flowers in the school garden.
1. you must clean the board every day
2. you must do homework
3. you must go to school on time
a
B.BEDS