102 : 100 nhân 50

Nhà Trắng ở Mỹ

ung ho mk nhe nguyen minh ngoc

bang 40 nhe

a) Tieu het so tien la: 

(20000x2)+50000=90000 đong

b) bác còn lại số tiền là: 

100000-90000=10000 đong

I. Rewrite the sentences, so that their meaning stays the same, using the words given

1. They built the Opera House in 1973.

\(\Rightarrow\) The Opera House ......................................... built

2. She chose my best friend for the school's football team two years ago.

\(\Rightarrow\) My best friend .......................................... chosen

3. Lan passed the oral examination because she practiced speaking every day.

\(\Rightarrow\) Lan practiced .......................................... so

4. Collecting old stamps is my brother's interest.

\(\Rightarrow\) My brother ........................................ interested

5. Rock music is more fantastic than traditional music.

\(\Rightarrow\) Traditional music................................. as

cạnh hình vuông là :

20 : 4 = 5 ( cm )

diện tích hình vuông là :

5 x 5 = 25 ( cm2 )

đáp số : 25 cm2

Thiếu dữ kiện rồi. Tui ra nhiều đáp án lắm

M = 2 / 3 . 5 + 2 / 5 . 7 + 2 / 7 .9 +.... + 2 / 97 . 99

M = 1 / 3 - 1 / 5 + 1 / 5 - 1 / 7 + 1 / 7 - 1 / 9 + ..+ 1 /97 - 1 / 99

M = 1 / 3 - 1 / 99

M = 33 / 99 - 1 / 99

M = 32 / 99