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Numbers

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Uchiha Sasuke
29/01/2018 at 19:41
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0
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Let the numbers x and y satisfy the conditions:

\(x^2+y^2-xy=2\)

\(x^4+y^4+x^2y^2=8\)

The value of \(P=x^8+y^8+x^{2014}\times y^{2014}\) is:

Numbers


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Đỗ Phi Phi
11/01/2018 at 23:12
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3
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In the United States, Thanksgiving is celebrated on the fourth Thursday in November. Which of the following statements is (are) true?

I. Thanksgiving is always the last Thursday in November.

II. Thanksgiving is never celebrated on November 22.

III. Thanksgiving can not be celebrated on the same date 2 years in a row

Grade 6NumbersCalendar

  • ...
    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 đúngbanhqua


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Đỗ Phi Phi
11/01/2018 at 23:07
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3
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In the figure at the right, how many paths are there from A to X X A

if the only ways to move are up and to the right? 

(A) 4          (B) 5          (C) 6           (D) 8         (E) 9

Grade 6Numbers

  • ...
    Lê Quốc Trần Anh Coordinator 12/01/2018 at 16:38
    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


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Đỗ Phi Phi
08/01/2018 at 21:28
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3
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If 0< a< b< 1. which of the following is (are) true?

I. a- b is negative

II.  \(\dfrac{1}{ab}\) is positive

III. \(\dfrac{1}{b}\) - \(\dfrac{1}{a}\) is positive

(A) I only           (B) II only           (C) III only           (D) I and II only          (E) I, II and III

 

FractionGrade 6Numbers

  • ...
    FA Liên Quân Garena 08/01/2018 at 21:40

    I chose the answer : E

  • ...
    Yuki Judai 20/01/2018 at 06:50

    hjh.hj.kjh,jhb,bjv,

  • ...
    Trương Như Hoàng 08/01/2018 at 22:22

    I choose D because :
    a<b => a-b<0 which means a-b is negative so I is true.

    0<a<b => ab>0 => \(\dfrac{1}{ab}\) is positive so II is true.

    \(\dfrac{1}{b}\) -\(\dfrac{1}{a}\)=\(\dfrac{a-b}{ab}\) but a-b<0 and ab>0 => \(\dfrac{a-b}{ab}\) is negative so III is false


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Nguyen Huu Ai Linh
07/12/2017 at 08:24
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2
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3; 6; 9; 12; 15; 18; 21; 24; 27; 30; ...

Which number are in 99th place?

Numbers

  • ...
    Nguyễn Hưng Phát 07/12/2017 at 11:32

    The first number:3=1.3

    The second number:6=3.2

    The third number:9=3.3

    .........

    So the 99th number of row is:

       3.99=297

    Answer:297

    Nguyen Huu Ai Linh selected this answer.
  • ...
    Dao Trong Luan Coordinator 07/12/2017 at 11:30

    1st = 1.3

    2nd = 2.3

    3rd = 3.3

    ............

    => 99th = 99.3 = 297


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