a.(0.25)3 . 32
b (-0.125)3.804
tính:
a. (0.25)3 . 32
b. (0.125)3 . 804
a) \(\left(0,25\right)^3\cdot32=0,5\)
b) \(\left(0,125\right)^3\cdot80^4\)= 80000
X : 0.25 + X : 0.125 = 24252
\(x:0,25+x:0,125=24252\\ x:\dfrac{25}{100}+x:\dfrac{125}{1000}=24252\\ x\times\dfrac{100}{25}+x\times\dfrac{1000}{125}=24252\\ x\times4+x\times8=24252\\ x\times\left(4+8\right)=24252\\ x\times12=24252\\ x=24252:12\\ x=2021\)
x : 0,25 + x: 0,125 = 24252
x \(\times\) 4 + x \(\times\) 8 = 24252
x \(\times\) ( 4 + 8 ) = 24252
x \(\times\) 12 = 24252
x = 24252 : 12
x = 2021
\(x\) : 0,25 + \(x\) : 0,125 = 24252
\(x\) x 4 + \(x\) x 8 = 24252
\(x\) x (4 + 8) = 24252
\(x\) x 12 = 24252
\(x\) = 24252 : 12
\(x\) = 2021
Tìm x:
a,x+x:0.125+x:0.25=335.4
b,Xx9.9+x:10=2.5
a: =>x+8x+4x=335*4
=>13x=335*4
=>x=1340/13
b: =>10x=2,5
=>x=0,25
Tính
A=1/2 /0.25-1/4/0.25+1/8/0.125-1/10/0.1
các bn giải rõ ràng cho mik nha
\(A=\frac{1}{2}:0,25-\frac{1}{4}:0,25+\frac{1}{8}:0,125-\frac{1}{10}:0,1\)
\(A=2-1+1+1\)
\(A=1+1+1\)
\(A=1.3\)
\(A=3\)
Vậy \(A=3\)
12.45-:0.25+1.6*0.025-:0.125+50:0.5=
12,45 : 0,25 + 1,6 x 0,25 : 0,125 + 50 : 0,5
= 12,45 x 4 + 1,6 x 0,25 x 8 + 50 x 2
= 49,8 + 3,2 + 100
= 53 + 100
= 153
Tính:(0.25)3.32;(-0.125)3.804
\(\left(0,25\right)^3.32\\ =\left(0,5\right)^6.2^5\\ =\left(0,5.2\right)^5.0,5=\\ 0,5\)
kết quả của dãy tính sau 1/2 + 3/4 -0.25 +50% + 1/4 -75% + 0.125 = ?
= 0,5 + 0,75 - 0,25 + 0,5 + 0,25 - 0,75 + 0,125 = 1,125
Tính nhanh:
\(25\%+\dfrac{3}{4}+\dfrac{1}{2}:0.5-\dfrac{1}{4}:0.25+\dfrac{1}{8}:0.125\)
`25%+3/4+1/2:0,5-1/4:0,15+1/8:0,125`
`=1/4+3/4+1/2xx2-1/4xx4+1/8xx8`
`(1/4+3/4)+(1/2xx2)-(1/4xx4)+(1/8xx8)`
`=1+1-1+1`
`=2`
Lesson 5: Find the value of a so that (a: 0.1) + (a : 0.2) + ( a : 0.5) + ( a : 0.25 ) + ( a : 0.125) = 290
\(a:0,1+a:0,2+a:0,5+a:0,25+a:0,125=290\)
\(a\times10+a\times5+a\times2+a\times4+a\times8=290\)
\(a\times\left(10+5+2+4+8\right)=290\)
\(a\times29=290\)
\(a=\dfrac{290}{29}\)
\(a=10\)