x : 0.34 = 10.4 - 3.59
18.6 - x nhân 4.5 =3.59
`18,6-x xx 4,5 = 3,59`
`=>x xx 4,5 = 18,6-3,59`
`=> x xx 4,5 = 15,01`
`=> x = 15,01 : 4,5`
`=> x = 3,34`
18.6 - x . 4.5 = 3.59
x . 4.5 = 18.6 - 3.59
x . 4.5 = 15.01
x = 15.01 : 4.5
x = 3.335
Ta có: \(18,6-x\cdot4,5=3,59\)
\(\Leftrightarrow x\cdot4,5=15,01\)
hay \(x=\dfrac{1501}{450}\)
Câu 1:
a, y x 0.34= 1.19 x 1.2
b,0.2 ; y= 1/2 - 4.5
Câu 1:
a, y x 0.34= 1.19 x 1.2
<=>y x 0.34=1.428
<=>y=4.2
vậy y=4.2
b,0.2 ; y= 1/2 - 4.5
<=>0.2:y=-4
=>y=-0.05
vậy y=-0.05
Câu 1:
\(y.0,34=1,19.1,2\\ \Leftrightarrow y.0,34=1,428\\ \Rightarrow x=4,2\)
Câu 2:
\(0,2:y=\dfrac{1}{2}-4.5\\ \Leftrightarrow0,2:y=-4\\ \Rightarrow y=-0,05\)
Câu 1:
<=>y x 0.34=1.428
<=>y=4.2
vậy y=4.2
<=>0.2:y=-4
=>y=-0.05
vậy y=-0.05
A; X*1.8 =72
B;X*0.34=1019*1.02
C;X*1.36==4.76*4.08
a, x=72:1,8
x=40
b, x*0,34=1309,38
x = 1309,38:0,34
x =3057
c, tương tụ như câu b
tick nha bạn
4².21-4².11.x=10.4⁴
\(\Rightarrow4^2\left(21-11x\right)=10\cdot4^4\\ \Rightarrow21-11x=10\cdot4^2=160\\ \Rightarrow11x=-139\Rightarrow x=-\dfrac{139}{11}\)
Tổng, hiệu sau là số nguyên tố hay hợp số? Vì Sao
a)D=5.7.9.11-2.17
b)E=3427+5278
c)F=4023+125.6
d)M=3.59-3.2.29
16.2 x 3,7 + 5.7 x 16.2 - 7.8 x 4.8 - 4.6 x 7.8 / 11.2 +12.3 +13.4 -12.6 -11.5 -10.4
a) x thuộc Ư(30) và x> 10.4 b) (4x-1)^2=25.9 c) 846:[41-(7x-5)]=47
a: \(x\in\varnothing\)
b: \(\Leftrightarrow\left[{}\begin{matrix}4x-1=15\\4x-1=-15\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=4\\x=-\dfrac{7}{2}\end{matrix}\right.\)
4X . 3X + 6X - 4 X =10.4+4.5
EM NÀO NHANH CHỊ TÍCH
4x.3x + 6x - 4x = 10.4 + 4.5
=> 12x^2 + 2x = 40 + 20
=> 2x(6x + 1) = 60
=> x(6x + 1) = 30
4x . 3x + 6x - 4x = 10.4 + 4 + 5
=> 12xx + 2x = 4.(10 + 5)
=> 2.6xx + 2x = 4.15
=> 2(6xx + x) = 60
=> 6xx + x = 60 : 2
=> 6xx + x = 30
=> x(6x + 1) = 30
Tim X trong phep chia co du sau :
a) 0.24 : x = 0.34 ( du 0,002 ) b) x : 13.7 = 4.56 ( du 0,05 )
a) 0.24 : x = 0.34 ( du 0,002 ) b) x : 13.7 = 4.56 ( du 0,05 )
x=0.34\(\times\)0.24+0.002 x=4.56\(\times\)13.7+0.05
x=... x=...
a) 0.24 : x = 0.34 ( du 0,002 )
suy ra \(x\times0,34+0,002=0,24\)
=> \(x\times0,34\)=0,238
=> X=0,7
b) x : 13.7 = 4.56 ( du 0,05 )
Suy ra \(x=13,7\times4,56+0,05\)
=> x=62,522