\(\left(\frac{1}{1.2.3}+\frac{1}{2.3.4}+...+\frac{1}{8.9.10}\right).x=\frac{22}{45}\)  vậy

\(\frac{11}{45}.x=\frac{22}{45}\)

\(x=\frac{22}{45}\div\frac{11}{45}=2\)

vậy suy ra x =2

mình chắc chắn 100% luôn đó, cái này ở trong violympic toán 7 vòng 12 phải ko
 

Bằng 411100

Sao lại còn duyệt nữa, OLM duyệt nhanh giùm em cái, bạn Hoàng Phúc đang cần mà

1. Put the dialogue in the correct order. Then practice it with your partner.

a) __2___ Mum: Yes, you can watch that.

b) __6___ Jack: I have no homework today.

c) ___5__ Mum: What about your homework?

d) __4___ Jack: “Toy Story”.

e) __3___ Mum: What’s on?

f) __1__ Jack: Mum, can I watch TV?

Thế thì việc gì phải đứng đầu?

The girl is .............. in the library

quiet walking

walking quiet

walk quiet

The .............. boy is crying ..............

loudly,angry

angry,loudly

sad,angry

35 + 45 = 80

Tick nha! Phạm Phương Nguyên

rewrite sentences using " eventhough "

1. In spite of being old , he still leads an actice life

⇒......Even though he was old,he still leads an actice life......

2. Despite being disapointed , he tired to smile

=> ..........Even though he was disapointed , he tired to smile............

3. In spite of being not good , he still goes to scholl

=>.........Even though he was not good , he still goes to school.....

4. Despite feeling unhealthy , she kept on working

=>.....Even though she felt unhealthy , she kept on working........

5. In spite of being hungry , she didn't eat anything

=>.......Even though she was hungry , she didn't eat anything......

Chọn từ có phần gạch chân phát âm khác với các từ còn lại:

a.killed b.listened c.perfected d.preferred

a.opens b.books c.mistakes d.notes

a.oranges b.changes c.dances d.notes

a.goes b.apples c.clothes d.likes

a.decided b.posted c.stopped d.needed

lũy thừa bậc 2 là số 2 là số mũ còn thừa số được nhân lên 2 lần là 1 thừa số bất kì nào đó

2^2=4

2^4=16

4^2=16

MÌNH HỌC ỚP 6 TICK MÌNH NHA^^