số c là

244,332/90*100=271480

số b là

271480-244,332=27148

số a là

2714,8

Nam is more intelligent than Petter.

⇒ Peter is more unintelligent than Nam.

1.There are four people in her family.

Her family has four people.

2. My house is behind the hotel.

The hotel is in front of my house.

3. Does your class have twenty - five students?

Are there twenty - five students in your class?

4. He goes to work at seven fifteen.

He goes to work at a quarter past seven.

5. The drug store is to the right of the bakery

The bakery is to the left of the drug store

540000 : 450000 x 100 = 120 %

I think that everything said so far is pretty good; although, some of the best teachers I know don't fall under many of these descriptions. Most of them are very strict and very knowledgeable of their subject matter, but they are also very good at explaining the material to students. Contrary to popular belief, the best teacher were not necessarily the ones I liked while in school. They were, however, much appreciated when I entered college. I was not the least bit surprised by the expectations set forth by my professors. I had already experienced that for years. This can also be said of the work place. A very easy transition for me because I was accustomed to being expected to do exactly what I was asked and then some.

Good luck to you!

\(C=\left(\frac{1}{4}-1\right)\left(\frac{1}{9}-1\right)...\left(\frac{1}{81}-1\right)\left(\frac{1}{100}-1\right)\)

\(=\left(-\frac{3}{4}\right).\left(-\frac{8}{9}\right)...\left(-\frac{80}{81}\right).\left(-\frac{99}{100}\right)\)

\(=\left(-\frac{3}{2^2}\right).\left(-\frac{8}{3^2}\right)...\left(-\frac{80}{9^2}\right).\left(-\frac{99}{10^2}\right)\)

\(=\left[\left(-1\right).\left(-1\right)...\left(-1\right)\left(9\text{ chữ số -1}\right)\right]\left[\frac{3}{2.2}.\frac{2.4}{3.3}...\frac{8.10}{9.9}.\frac{9.11}{10.10}\right]\)

\(=-\frac{11}{2.10}=-\frac{11}{20}\)

Bạn chỉ cần lấy: ( 999 + 100 ) : 2 = 549,5 thôi tick mình nha

gọi số đoạn thẳng là a 

=> a x ( a - 1 ) : 2 = 105

a ( a - 1 ) = 105 x 2

a ( a - 1 ) = 210 = 14 x 15

=> a = 15 

thế thì cho trước 15 điểm

29x87-29x23+64x71

=29x(87-23)+64x71

=29x64+64x71

=(29+71)x64

=100x64

=6400

mk nhanh nhất

There are 4 people in my family: my mother, father, my sister and me. They are all kind to me. But the person who always take care of me, nobody else is my mother. Her name is Loan. This year, she's 40 years old and she's an office worker for a famous company in my city. She is friendly and kind with everyone. At home, she is a hard - working housewife. Her food are very delicious. When I do something wrong, she doesn't scold at me, she just gives me good advice for it. I love my mother very much!

Đây là bài tham khảo nên bạn hãy đổi tên, tuổi, công việc của mẹ bạn nhé!