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x+x :0,5 +x :0,25 +x: 0,125 =150
(x+1)+(x+2)+(x+3)+......+(x+100)=5750
x+x:0,5+x:0,25+x:0,125=150
Giải:
\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+...+\left(x+100\right)=5750\)
\(100.x+\left(1+2+3+...+100\right)=5750\)
Số số hạng \(\left(1+2+3+...+100\right)\) là: \(\left(100-1\right):1+1=100\)
Tổng dãy \(\left(1+2+3+...+100\right)\) là: \(\left(1+100\right).100:2=5050\)
\(\Rightarrow100.x+5050=5750\)
\(100.x=5750-5050\)
\(100.x=700\)
\(x=700:100\)
\(x=7\)
\(x+x:0,5+x:0,25+x:0,125=150\)
\(x.\left(1+2+4+8\right)=150\)
\(x.15=150\)
\(x=150:15\)
\(x=10\)
Chúc bạn học tốt!
Tìm X:
x+x:0,25+x:0,5+x:0,125=0,45
giúp mik với mn ơi
bạn nào làm nhanh mình sẽ tim
tìm X
A) X+X:0,5+X:0,25+X:0,125=15
B) 150:(X-4x9)=25
X+2x X+3x X+.......+10x X=165
Tìm x:
X:0,125+x:0,5+x:0,25=x:0,5+165
x : 0,125 + x : 0,5 + x : 0,25 = x : 0,5 + 165
x : 8 + x : 2 + x : 4 = x : 2 + 165
x : x : 8 + x : 2 + x : 4 = 2 + 165
1 : 8 + x : 2 + x : 4 = 167
8 + x : [ 2 + 4 ] = 167
8 + x : 6 + 167
x : 6 = 167 - 8
x : 6 = 159
x = 159 : 6
x = 26.5
X+X:0,25+X:0,5+X:0,125=0,45
=>x+4x+2x+8x=0,45
=>15x=0,45
=>x=0,03
X +X : 0,5 + X : 0,25 + X :0,125 =15
=>x+2x+4x+8x=15
=>15x=15
=>x=1
\(x+x:0,5+x:0,25+x:0,125=15\)
\(x+x:\dfrac{1}{2}+x:\dfrac{1}{4}+x:\dfrac{1}{8}=15\)
\(x+x\times2+x\times4+x\times8=15\)
\(x\times\left(1+2+4+8\right)=15\)
\(x\times15=15\)
\(x=15:15\)
\(x=1\)
X+X:0,5+X:0,25+X:0,125=2022
X : (1+0,5+0,25+0,125)=2022
X : 1,875 = 2022
X = 1078,4
x+x:0,5+x:0,25+x:0,125 = 2022
x.(1+1/2+1/4+1/8) = 2022
x.15/8 = 2022
x = 2022: 15/8
x = 1078,4
x+x:0,25+x:0,5+x:0,125=45
x + x : 0,25 + x : 0,5 + x : 0,125 = 0,45
`x+x:0,25+x:0,5+x:0,125=0,45`
`=>x+x xx 4+x xx 2+x xx 8=0,45`
`=> x xx (1+4+2+8)=0,45`
`=> x xx 15=0,45`
`=> x =0,45:15`
`=>x=0,03`
\(x+x:0,25+x:0,5+x:0,125=0,45\)
\(x\times1+x\times4+x\times2+x\times8=0,45\)
\(x\times\left(1+4+2+8\right)=0,45\)
\(x\times15=0,45\)
\(x=0,45:15\)
\(x=0,03\)
x+x:1/4+x:1/2+x:1/8 bằng 0.45
X+X x 4+ X x 2+ X x 8 bằng 0.45
x+4x+2x+8x bằng 0.45
15x bằng 0.45
x bằng 0.45/15 bằng 0.03