Voted Questions
Đỗ Phi Phi
11/01/2018 at 23:07
My answer is C: 6 Đỗ Phi Phi selected this answer.

FA Liên Quân Garena 12/01/2018 at 12:26
(D)8 or (E)9

Nguyễn Thị Thanh Hiền 12/01/2018 at 09:42
(D)8 or (E)9
Đỗ Phi Phi
11/01/2018 at 23:12
FA Liên Quân Garena 12/01/2018 at 12:25
Sentence 1: Thanksgiving is always the last Thursday of November

Nguyễn Thị Thanh Hiền 12/01/2018 at 09:39
Sentence 1: Thanksgiving is always the last Thursday of November

nguyễn hồng quân 13/04/2018 at 09:09
câu 1 là đúng
baohong912006
14/01/2018 at 15:20Lê Quốc Trần Anh Coodinator
15/01/2018 at 18:03
FA FIFA Club World Cup 2018 16/01/2018 at 21:00
tan(a)=12⇔a=26,5605118
⇒tan(90−2a)=tan(90−2⋅26,56505118)=34


Alone 16/01/2018 at 13:10
Dao Trong Luan:Why? tan(a)=\(\dfrac{1}{2}\) can \(\Rightarrow a=26,5605118\)
This is you use calculator for calculate
Uchiha Sasuke
16/01/2018 at 19:41Đỗ Duy Mạnh
11/04/2017 at 11:15

Đỗ Duy Mạnh 11/04/2017 at 20:08
\(That\) \(number\) \(is\) \(322\)

Vũ Hà Vy Anh 11/04/2017 at 17:49
i think is 322
Kaya Renger Coodinator
15/08/2017 at 22:45
AL 16/08/2017 at 15:58
Use AMGM's ineq:
\(\dfrac{b+c}{\sqrt{a}}+\dfrac{c+a}{\sqrt{b}}+\dfrac{a+b}{\sqrt{c}}\ge\dfrac{2\sqrt{bc}}{\sqrt{a}}+\dfrac{2\sqrt{ca}}{\sqrt{b}}+\dfrac{2\sqrt{ab}}{\sqrt{c}}\)
\(=\left(\sqrt{\dfrac{bc}{a}}+\sqrt{\dfrac{ca}{b}}\right)+\left(\sqrt{\dfrac{ca}{b}}+\sqrt{\dfrac{ab}{c}}\right)+\left(\sqrt{\dfrac{ab}{c}}+\sqrt{\dfrac{bc}{a}}\right)\)
\(\ge\sqrt{a}+\sqrt{b}+\sqrt{c}+\sqrt{a}+\sqrt{b}+\sqrt{c}\)
\(\ge\sqrt{a}+\sqrt{b}+\sqrt{c}+3\sqrt[3]{abc}\)\(=\sqrt{a}+\sqrt{b}+\sqrt{c}+3\)
Selected by MathYouLike
Uchiha Sasuke
26/01/2018 at 07:48Lucy Cinder
13/03/2017 at 21:28
Nguyễn Trần Thành Đạt 13/03/2017 at 23:03
The total number of candy John and Tom ia:15+31=46( candies)
Tom need to give to John so that each boy will have the same number of candies is:
3146:2=8(candies)
Answer: 8 candies.
Selected by MathYouLike 
MSN 15/03/2017 at 18:49
The total number of candy John and Tom ia:
15+31=46( candies)
Tom need to give to John so that each boy will have the same number of candies is:
3146:2=8(candies)
Answer: 8 candies 
Nguyễn Phương Linh 24/03/2017 at 21:58
The total candies of John and Tom is:
15 + 31 = 46 (candies)
The number of candies that Tom needs to give John so that each boy will have the same number of candies is:
31  (46 : 2) = 8 (candies)
Answer: 8 candies.