Các hoạt động trên hai số sản xuất một số bằng tổng của họ trừ đi 2. Giá trị của (... ((1 @ 2) @ 3) ... @ 2017) là ???
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Bài thi số 3
19:25
Câu 1:
A man drove a car from A to B at speed 60km/h. After arriving B, he took a rest for 30 minutes then turned back to A at speed 40km/h. Known that he started from A at 7:00 am and he reached A again at 3:15pm on the same day. The distance between A and B is km.
Câu 2:
The minimum of the expression is
Câu 3:
Given that is a positive integer such that and are perfect squares.
The sum of such integers is
Câu 4:
Given two triangles and...
Đọc tiếp
Bài thi số 3
A man drove a car from A to B at speed 60km/h. After arriving B, he took a rest for 30 minutes then turned back to A at speed 40km/h. Known that he started from A at 7:00 am and he reached A again at 3:15pm on the same day. The distance between A and B is km. Câu 2:
The minimum of the expression(x+2)(x+3)(x+6)$)
is
Câu 3:
Given that
is a positive integer such that and 
are perfect squares.
The sum of such integers is
Câu 4:
Given two triangles
and 
. Known that 
, 
and 
.
If
then 
Câu 5:
How many real numbers are there such that 
?
Answer: There are numbers.
Câu 6:
The operation
on two numbers produces a number equal to their sum minus 2.The value of @3\)...@2017\)$)
is
Câu 7:
ABC is a triangle. AM is the bisector of angle CAB. Given that AM = 4cm, AB = 6m and AC = 12cm.Then the measurement of angle BAC is degrees. Câu 8:
In the equation above, where 
is a constant.The greatest possible value of such that the equation has at least one solution is
Câu 9:
and 
are positive integers such that =n^2+1$)
, where 
is a prime number.
The number of pairs$)
is
Câu 10:
Given that=\frac{x^2}{2x-2x^2-1}$)
.
Calculate:
+f\(\frac{2}{2016}\)+f\(\frac{3}{2016}\)+...+f\(\frac{2015}{2016}\)+f\(\frac{2016}{2016}\)$)
=
(Input the answer as a decimal in its simplest form) Nộp bài
19:25 Câu 1:
A man drove a car from A to B at speed 60km/h. After arriving B, he took a rest for 30 minutes then turned back to A at speed 40km/h. Known that he started from A at 7:00 am and he reached A again at 3:15pm on the same day. The distance between A and B is km. Câu 2:
The minimum of the expression
Given that
The sum of such integers
Given two triangles
If
How many real numbers
Answer: There are numbers
The operation
ABC is a triangle. AM is the bisector of angle CAB. Given that AM = 4cm, AB = 6m and AC = 12cm.Then the measurement of angle BAC is degrees. Câu 8:
The number of pairs
Given that
Calculate:
(Input the answer as a decimal in its simplest form) Nộp bài
Let P(x) be a polynomial of degree 2015. Suppose P(n)=\(\dfrac{n}{n+1}\) for all n =0, 1, 2, ..., 2015. Find the value of P(2016)
.Bottle A contains 15% syrup. Bottle B contains 40% syrup. When these 2 bottles of syrup are mixed, the syrup content is 30% and the total volume is 600ml. How much syrup is in the bottle A at first?
find the volume of a pyramid such that the base area is 100cm2 and the height is 9cm
IV. Give the correct forms of the words in parentheses (1 pt). 21. We go ____________________ almost every summer. (camp) 22. Ho Chi Minh city is the _______________ city in Viet Nam. (large) 23. The school children like the summer __________________ best. (vacate) 24. There are three _______________ in this festival: water-fetching, fire-making and rice-cooking. (compete)
Rút gọn biểu thức :
Tính giá trị của đa thức biết x-y=5
Cho x+y=3.
x2 + y2+ 2xy−4x−4y +1
Tính giá trị biểu thức
a) Tìm x biết: 6x3 – 24x = 0.
b) Tìm a để đa thức (2x3_ 4x2+6x+a) chia hết cho (x+2)
Bài 2: Điền vào dấu ? một biểu thức để được một hằng đẳng thức, có mấy cách điền:
a. x2 + 2x + ? b. (x2 - x + 1) . ? c. (4x2 + ? + 4) d. ? + 8x + 16
Bài 4: Viết biểu thức sau dưới dạng tích.
1. 27x^3 - 27x2 + 3x + 1. 2. x^3 - 3x2 + 3x - 1. 3. 1/27 + x^3. 4. 0,001 - 1000x^3.