a, 0,01:2,5=(0,75.x):0,75
b, 4 phần 3:0,8=2 phần 3:(0,1x)
Tìm X trong các tỉ lệ thức sau:
a)3,8:(2X)=1/4:8/3
b)(0,25X):3=5/6:0,125
c)0,01:2,5=(0,75X):0,75
d)4/3:0,8=2/3:(0,1X)
Giữ lời hứa nka Nguyễn Mạnh Tân!
Hứa k r lm cko! Bài dài lắm
Tìm x trong các tỉ lệ thức sau:
a, 3,8 : ( 2x ) = 1/4 : 8/3
b, ( 0,25x ) : 3 = 5/6 : 0,125
c, 0,01 : 2,5 = ( 0,75x ) : 0,75
d, 4/3 : 0,8 = 2/3 : ( 0,1x )
( 0,25x ) : 3 = 5/6 : 0,125
( 1/4x ) : 3 = 5/6 : 1/8
( 1/4x ) : 3 = 5/6 x 8
( 1/4x ) : 3 = 20/3
1/4x = 20/3 x 3
1/4x = 20
x = 20 : 1/4
x = 80
0,01 : 2,5 = ( 0,75x ) : 0,75
1/100 : 25/10 = (3/4x) : 3/4
1/100 x 10/25 = (3/4x) : 3/4
=>(3/4x) : 3/4 = 1/250
3/4x = 1/250 x 3/4
3/4x = 3/1000
x = 3/1000 : 3/4
x = 1/250
4/3 : 0,8 = 2/3 : ( 0,1x )
<=>2/3 : (0,1x) = 4/3 : 0,8
2/3 : (0,1x) = 4/3 : 4/5
2/3 : (0,1x) = 4/3 x 5/4
2/3 : (0,1x) = 5/3
2/3 : (1/10x) = 5/3
1/10x = 2/3 : 5/3
1/10x = 2/3 x 3/5
1/10x = 2/5
x = 2/5 : 1/10
x = 2/5 x 10
x = 4
< giúp mình với >
a) 1\(\frac{1}{3}\): 0,8 = \(\frac{2}{3}\): (0,1x)
b) 0,01 : 2,5 = (0,75x) : 0,75
c) x : 0,16 = 9 : x
Tìm x, biết:
a) 0,01: 2,5 = (0,75x) : 0,75
b) 1\(\frac{1}{3}\) : 0,8 = \(\frac{2}{3}\) : (0,1x)
c) x : (-2,14) = -3,12 : 1,2
d) 2\(\frac{2}{3}\) : x = 2\(\frac{1}{12}\) : (-0,06)
c) \(x:\left(-2,14\right)=\left(-3,12\right):1,2\)
=> \(x:\left(-2,14\right)=-2,6\)
=> \(x=\left(-2,6\right).\left(-2,14\right)\)
=> \(x=5,564\)
Vậy \(x=5,564.\)
d) \(2\frac{2}{3}:x=2\frac{1}{2}:\left(-0,06\right)\)
=> \(\frac{8}{3}:x=\frac{25}{12}:\left(-\frac{3}{50}\right)\)
=> \(\frac{8}{3}:x=-\frac{625}{18}\)
=> \(x=\frac{8}{3}:\left(-\frac{625}{18}\right)\)
=> \(x=-\frac{48}{625}\)
Vậy \(x=-\frac{48}{625}.\)
Chúc bạn học tốt!
tìm x
\(a.3.8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
\(b.\left(0,25x\right):3=\frac{5}{6}:0,125\)
\(c.0,01:2,5=\left(0,75x\right):0,75\)
\(d.1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
LÀM GIÚP MIK NHA MẤY BẠN
Bài 70 tr 20 sbt ạ
3,8:(2x)=\(\frac{1}{4}\):\(2\frac{2}{3}\)
(0,25x):3=\(\frac{5}{6}\):0,125
0,01:2,5=(0,75x):0,75
\(1\frac{1}{3}\):0,8=\(\frac{2}{3}\):(0,1x)
Tìm x trong các tỉ lệ thức sau :
\(\left(a\right)3,8\div\left(2x\right)=\frac{1}{4}\div2\frac{2}{3}\)
\(3,8\div\left(2x\right)=\frac{3}{32}\)
\(2x=3,8\div\frac{3}{32}\)
\(2x=40\frac{8}{15}\)
\(x=20\frac{4}{15}\)
\(\left(0,25x\right)\div3=\frac{5}{6}\div0,125\)
\(\left(0,25x\right)\div3=6\frac{2}{3}\)
\(\left(0,25x\right)=6\frac{2}{5}\times3\)
\(\left(0,25x\right)=20\)
\(x=80\)
\(0,01\div2,5=\left(0,75x\right)\div0,75\)
\(0,004=\left(0,75x\right)\div0,75\)
\(0,75x=0,75\times0,004\)
\(0,75x=0,003\)
\(x=0,004\)
\(1\frac{1}{3}\div0,8=\frac{2}{3}\div\left(0,1x\right)\)
\(1\frac{2}{3}=\frac{2}{3}\div\left(0,1x\right)\)
\(\left(0,1x\right)=\frac{2}{3}\div1\frac{2}{3}\)
\(\left(0,1x\right)=\frac{2}{5}\)
\(x=4\)
Dung ko z
bạn ghi ra đi mk giải cho (kb để mk ns cho dễ hiểu)
Tìm x trong các tỉ lệ thức sau :
a) \(3,8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
b) \(\left(0,25x\right):3=\frac{5}{6}:0,125\)
c) \(0,01:2,5=\left(0,75x\right):0,75\)
d) \(1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
làm gấp ạ, đúng mik tick cho
Tìm \(x\) trong các tỉ lệ thức sau :
a) \(3,8:\left(2x\right)=\dfrac{1}{4}:2\dfrac{2}{3}\)
b) \(\left(0,25x\right):3=\dfrac{5}{6}:0,125\)
c) \(0,01:2,5=\left(0,75x\right):0,75\)
d) \(1\dfrac{1}{3}:0,8=\dfrac{2}{3}:\left(0,1x\right)\)
a)\(3,8:\left(2x\right)=\dfrac{1}{4}:2\dfrac{2}{3}\)
\(2x=3,8:\dfrac{3}{32}\)
\(x=\dfrac{608}{15}:2\)
\(x=\dfrac{304}{15}\)
b)\(\left(0,25x\right):3=\dfrac{5}{6}:0,125\)
\(0,25x=\dfrac{20}{3}\times3\)
\(x=20:0,25\)
\(x=80\)
c) \(0,01:2,5=\left(0,75\times x\right):0,75\)
\(0,004=0,75\times x:0,75\)
\(0,004=x\times0,75:0,75\)
\(0,004=x\times1\)
\(0,004=x\)
\(\Rightarrow x=0,004\)
d)\(1\dfrac{1}{3}:0,8=\dfrac{2}{3}:\left(0,1x\right)\)
\(\dfrac{5}{3}=\dfrac{2}{3}:0,1\times x\)
\(\dfrac{5}{3}=\dfrac{20}{3}\times x\)
\(\Rightarrow x=\dfrac{20}{3}:\dfrac{5}{3}\)
\(x=4\)
a) \(x=20\dfrac{4}{15}.\)
b) \(x=80\)
c) \(x=0,004\)
d) \(x=4.\)
tìm x trong các tỉ lệ thức sau
\(\left(a\right)3,8:\left(2x\right)=\frac{1}{4}:2\frac{2}{3}\)
\(\left(b\right)\left(0,25x\right):3=\frac{5}{6};0,125\)
\(\left(c\right)0,01:2,5=\left(0,75x\right):0,75\)
\(\left(d\right)1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
giải chi tiết nhé aj giải thật chi tiết mk tick cho
a) Lm r nkoa!
b) \(\left(0,25x\right):3=\frac{5}{6}:0,125\)
\(=\left(0,25x\right):3=\frac{20}{3}\)
\(\Rightarrow0,25x=\frac{20}{3}\cdot3=20\)
\(\Rightarrow x=20:0,25=80\)
\(\Rightarrow x=80\)
c) \(0,01:2,5=\left(0,75x\right):0,75\)
\(=\frac{1}{250}=\left(0,75x\right):0,75\)
\(\Rightarrow0,75x=\frac{1}{250}\cdot0,75=\frac{3}{1000}\)
\(\Rightarrow x=\frac{3}{1000}:0,75=\frac{1}{250}\)
\(\Rightarrow x=\frac{1}{250}\)
d) \(1\frac{1}{3}:0,8=\frac{2}{3}:\left(0,1x\right)\)
\(=\frac{5}{3}=\frac{2}{3}:\left(0,1x\right)\)
\(\Rightarrow0,1x=\frac{2}{3}:\frac{5}{3}=\frac{2}{5}\)
\(\Rightarrow x=\frac{2}{5}:0,1=4\)
\(\Rightarrow4\)