Given 3 number such that : x + y + z =3
Find the minimum P = xy + yz + zx
Hihi kb vs Linh nah m. n :3
<3 Girl 2k5 - FA
Find a natural number x and two demical digits y , z such that \(\left(5.10^n-2\right)x=3.y...yz\) ( y....yz có dấu gạch trên đầu ) for any natural number n > 1, where y...yz ( in the demical symtems ) contains n - 1 digits y.
P/S: Không biết làm cấm chõ mõm vào
Vũ Ngọc Mai KO phù hợp cái đầu con mẹ mày
Given x,y,x such that x/2 = y/3 = z/5 and x+ 3y + 6z = 82. Find M = x+ y + z
ngu ing lích :)
Ta có : \(\frac{x}{2}=\frac{y}{3}=\frac{z}{5}\Rightarrow\frac{x}{2}=\frac{3y}{9}=\frac{6z}{30}\)
Áp dụng tính chất dãy tỉ số bằng nhau ta có :
\(\frac{x}{2}=\frac{3y}{9}=\frac{6z}{30}=\frac{z+3y+6z}{2+9+30}=\frac{82}{41}=2\)
=> \(\hept{\begin{cases}\frac{x}{2}=2\\\frac{3y}{9}=2\\\frac{6z}{30}=2\end{cases}}\Leftrightarrow\hept{\begin{cases}x=4\\y=6\\z=10\end{cases}}\)=> M = x + y + z = 4 + 6 + 10 = 20
Vậy M = 20
In the figure below, x = Câu 2 Find the measure of angle J if \widehat{K}=29^o K =29 o and angle J and K are supplementary. Answer: \widehat{J}= J = ^o o . Câu 3 In the figure below, x = Câu 4 In the figure below, x = Câu 5 Solve: |2x-3|-4=3∣2x−3∣−4=3, where xx is a negative number. Answer: x=x= Câu 6 Calculate: 9+|-6|:1^2 =9+∣−6∣:1 2 = Câu 7 Compare: \dfrac{36}{27} 27 36 \dfrac{4}{3} 3 4 Câu 8 Find the negative number yy such that |y+\dfrac{7}{2}|-\dfrac{1}{2}=4∣y+ 2 7 ∣− 2 1 =4. Answer: y=y= Câu 9 Find xx such that \dfrac{32}{2^x}=2 2 x 32 =2. Answer: x=x= Câu 10 Find nn such that \dfrac{(-4)^n}{64}=-16 64 (−4) n =−16. Answer: n=n= Cần gấp nhé
. let x, y be real number such that 4 + = 1. Find the maximum and minimum values of the expression
\(y=\frac{2x+3y}{2x+y+2}\)
The value of x such that :
(3x - 2)(4x + 1) - 6x(2x + 5)= 5
Lm wen (....) ib vs Linh ik :3
:D 2k5 - girl nah
ko ghi lại đề nha !
12x2 +3x -8x -2 - 12x2 +30x = 5
25x = 5 + 2
x = 7/25
(3x - 2)(4x + 1) - 6x(2x + 5)= 5
=> 12x2+3x-8x-2-12x2+30=5
=> -5x+28=5
=> -5x=-23
=> x=\(\frac{23}{5}\)
For positive real numbers x,y,z so that: x+y+z = 3. Find the minimum value of expression
A = 1/( x^2 + x) + 1/(y^2+ y) +1/( z^2 +z)
Given \(A=\frac{2x-3}{7x+6}\)
Find the least positive value of x (x \(\in\) Z) such that A is a positive number
Dân ta phải biết sử ta
Cái gì ko biết thì tra google
Exam number 3
Fill in the blank with the suitable number
Question 1:
The sum of two numbers is 98 and their difference is 24. The greater number is
Question 2:
Fill missing number in the blank
41165+23042=23042+
Question 3:
Fill missing number in the blank
(32514+16257)+23459=+(16257+23459)
Question 4:
Calculate: 91625 – 27356=
Question 5:
If a square has one side’s length is 12cm then its perimeter is cm
Question 6:
If the perimeter of a square is 104m then its one side’s length is m
Question 7:
Find x such that x+24360=41256
Answer: x=
Question 8:
Find y such that y – 12358=18031
Answer: y=
Question 9:
Find the value of n such that
Answer: n=
Question 10:
Find the value of b such that
Answer: b=
let x,y,z>0 such that xyz=1. show that \(\frac{x^3+1}{\sqrt{x^4+y+z}}+\frac{y^3+1}{\sqrt{y^4+z+x}}+\frac{z^3+1}{\sqrt{x^4+x+y}}\ge2\sqrt{xy+yz+zx}\)