ghazi
  • ghazi
dividing rational numbers
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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anonymous
  • anonymous
lol...why u closed it?
ghazi
  • ghazi
guys this is for a kid ...thanks for your coperation and muku...is your question scalared value tensor?
ghazi
  • ghazi
|dw:1348682390341:dw| this way we divide rational number p/q lets say your question is 7/5 @vikayefremova can you take a pain to come here

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anonymous
  • anonymous
yeah
ghazi
  • ghazi
@mukushla see you soon :)
ghazi
  • ghazi
|dw:1348682537294:dw|
anonymous
  • anonymous
this is not the problem, im trying to figure out how to do this.. |dw:1348682653856:dw|
ghazi
  • ghazi
we have to divide 7 by 5 ....so first of all multiply 5 by 1 write 1 in the quotient..now write 5 underneath 7 , now subtract 5 from 7 your remainder is 2 ..after that you can divide it further, then use decimal ...putting a decimal will bring a zero in front of remainder 2 it will become 20 ///now multiply 5 by4 you'll get 20 and subtract 20 from 20 your division is over since remainder is zero ...okay?
ghazi
  • ghazi
\[\frac{ 2 }{ 6 }\div \frac{ 5 }{ 7 }= \frac{ 2 }{ 6 }*\frac{ 7 }{ 5 }\]
anonymous
  • anonymous
cross multiply?
ghazi
  • ghazi
the term after the divisional sign is take as inverse ....|dw:1348682884282:dw|
ghazi
  • ghazi
\[\frac{ 2*7 }{ 6*5 }\] clear?
ghazi
  • ghazi
it is not cross multiplication
anonymous
  • anonymous
oh okay.. let me see :P
ghazi
  • ghazi
you'll get \[\frac{ 7 }{ 15 }\]
anonymous
  • anonymous
oh
ghazi
  • ghazi
still confused?
anonymous
  • anonymous
yeahh :/
ghazi
  • ghazi
|dw:1348683051435:dw|
ghazi
  • ghazi
now?
anonymous
  • anonymous
maybe..
ghazi
  • ghazi
see 6/2=3 ...similarly just think |dw:1348683164352:dw|
ghazi
  • ghazi
2*3=6 and \[\frac{ 2*3 }{ 2}=\frac{ 6 }{ 2 }=3\] now?
anonymous
  • anonymous
yes i think i got it.. thanks!
ghazi
  • ghazi
|dw:1348683269161:dw|
ghazi
  • ghazi
|dw:1348683491745:dw| just divide numerator and denominator by 2 ...now?
ghazi
  • ghazi
2/2=1 and 6/2=3
anonymous
  • anonymous
okay i understand, thanks
ghazi
  • ghazi
yea i know :)
ghazi
  • ghazi
it's nothing just a formula for rational number division\[\frac{ p }{ q }\div \frac{ r }{ s }=\frac{ p }{ q }*\frac{ s }{ r }=\frac{ p*s }{ q*r }\] this is a general formula :)
anonymous
  • anonymous
okay thanks :)
ghazi
  • ghazi
@vikayefremova
ghazi
  • ghazi
question ??
anonymous
  • anonymous
umm.. wait a just sec!
ghazi
  • ghazi
k
anonymous
  • anonymous
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ghazi
  • ghazi
\[10^{-7}= 0.0000001\] just add number of (n-1) zero in front of one..means one less zero after decimal then the given power...here power is 7 you need to put 6 zeroes and 1 after decimal
anonymous
  • anonymous
okay thanks
ghazi
  • ghazi
next
anonymous
  • anonymous
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anonymous
  • anonymous
?
ghazi
  • ghazi
calculate the values
ghazi
  • ghazi
3^4=81 which is the biggest of all
anonymous
  • anonymous
okay :) next...
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ghazi
  • ghazi
area of square = side*side=x^2=225 x=15 she needs to fence...3 sides so total length= 15+15+15=45
ghazi
  • ghazi
@vikayefremova ??
anonymous
  • anonymous
thanks :D
ghazi
  • ghazi
next
anonymous
  • anonymous
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ghazi
  • ghazi
\[-\sqrt{456}=-21.35\] and this lies between D
ghazi
  • ghazi
-22 and -21 ..next
anonymous
  • anonymous
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ghazi
  • ghazi
\[5.3*10^{-3}\]
anonymous
  • anonymous
okay :)
ghazi
  • ghazi
next ....
anonymous
  • anonymous
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ghazi
  • ghazi
fencing = perimeter.... now let's say side= x area of square= x^2= 2000 x= 44.72 fencing= 44.72*4= 179
anonymous
  • anonymous
ghazi
  • ghazi
\[\frac{ \sqrt{25} }{ \sqrt{16} }+\frac{ 3 }{ 4 }=\frac{ 5 }{ 4 }+\frac{ 3 }{ 4 }\]
ghazi
  • ghazi
8/4=2
anonymous
  • anonymous
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ghazi
  • ghazi
5,600,000
anonymous
  • anonymous
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ghazi
  • ghazi
6*6*6=216=volume
ghazi
  • ghazi
S=6, volume= s*s*s=6*6*6=216
anonymous
  • anonymous
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ghazi
  • ghazi
\[3^2+5^0+2^{-2}=9+1+\frac{ 1 }{ 4 }=\frac{ 36+4+1 }{ 4 }=\frac{ 41 }{ 4 }=10\frac{ 1 }{ 4 }\]
ghazi
  • ghazi
\[10\frac{ 1 }{ 4 }=\frac{ 10*4+1 }{ 4 }=\frac{ 41 }{ 4 }\] clear?
anonymous
  • anonymous
yes.. clear, thank you :)
ghazi
  • ghazi
next
anonymous
  • anonymous
ghazi
  • ghazi
\[\frac{ 10^9 }{ 10^5 }=10^{9-5}=10^4\] bases are same power will be subtracted in division
anonymous
  • anonymous
okay :D
ghazi
  • ghazi
you've got a lot more in line....next?
anonymous
  • anonymous
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anonymous
  • anonymous
just a few more ;)
anonymous
  • anonymous
only 15 questions..
ghazi
  • ghazi
anything divided by zero...is infinity..so it is not a real number
ghazi
  • ghazi
only 15 hahaha
anonymous
  • anonymous
yes :)
ghazi
  • ghazi
next
anonymous
  • anonymous
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anonymous
  • anonymous
2 more questions left! :P
ghazi
  • ghazi
\[8.8^8=8^{8+1}=8^9\] bases are same..so power will be added in multiplication
ghazi
  • ghazi
don't worry...doesn't matter you've left with 100 or 10 ..keep shooting
anonymous
  • anonymous
okay, last one.. for sure :D
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ghazi
  • ghazi
\[\frac{ -4 }{ 2 }=\frac{ -2 }{ 1 }\]
ghazi
  • ghazi
don't worry about it..next
anonymous
  • anonymous
well that is it.. thanks! :D
ghazi
  • ghazi
i said not to worry..
anonymous
  • anonymous
wow.. :) thank you
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ghazi
  • ghazi
where we made the mistake? by thats awesome...you did it :) congrats
ghazi
  • ghazi
*by the way
anonymous
  • anonymous
i forgot to answer one more question.. but still this is very good, thank you soo much :) i would'v never done this without you :)
ghazi
  • ghazi
damn....can't you do the one that you have left with
anonymous
  • anonymous
nope.. i can only try once.. too late :D
ghazi
  • ghazi
hmm...
anonymous
  • anonymous
yeahh :)
ghazi
  • ghazi
@vikayefremova next?
anonymous
  • anonymous
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ghazi
  • ghazi
we have done this..
anonymous
  • anonymous
nope this is different one, it just looks like it :P
ghazi
  • ghazi
come on it asks for the volume of cube which is = side*side*side=6*6*6=216
anonymous
  • anonymous
all you have to do is multiply?? no division?
ghazi
  • ghazi
no...it is already give in your question that volume=\[s^3= s*s*s\] since s=6
ghazi
  • ghazi
6*6*6=216
ghazi
  • ghazi
@vikayefremova clear? if yes then next
anonymous
  • anonymous
yes clear :) i didnt know it was that easy.. lol
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ghazi
  • ghazi
\[(-8)(-8)(-8)*h=(-8)^{1+1+1}*h=(-8)^3*h\] since bases are same ..power will be added ...and power of (-8) is 1
anonymous
  • anonymous
thanks :D
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ghazi
  • ghazi
\[d=16*t^2=16*(3)^2=16*9=144\] you have to put t=3 in the given formula to find out distance traveled
ghazi
  • ghazi
@vikayefremova next
ghazi
  • ghazi
?
anonymous
  • anonymous
how do i find the greatest value?? multiply?
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ghazi
  • ghazi
2^5=2*2*2*2*2=32 similarly 3^4=3*3*3*3 4^3=4*4*4 5^2=5*5
anonymous
  • anonymous
ohhh :D i see.. thanks! i get it now :D
ghazi
  • ghazi
cool
anonymous
  • anonymous
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ghazi
  • ghazi
\[(-6)^{-2}=\frac{ 1 }{ (-6)^2 }=\frac{ 1 }{ 36 }\]
ghazi
  • ghazi
\[x^{-b}=\frac{ 1 }{ x^b }\]
anonymous
  • anonymous
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ghazi
  • ghazi
\[8^0-(11-2^4)^{-2}=1-(11-2*2*2*2)^{-2}=1-(11-16)^{-2}=1-(-5)^{-2}\] then \[1-(-5)^{-2}=1-\frac{ 1 }{ (-5)^2 }=1-\frac{ 1 }{ 25 }=\frac{ 25-1 }{ 25 }=\frac{ 24 }{ 25 }\]
ghazi
  • ghazi
\[a^0=1\]
ghazi
  • ghazi
@vikayefremova clear?
anonymous
  • anonymous
yes, clear :) thank you
ghazi
  • ghazi
:)
anonymous
  • anonymous
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ghazi
  • ghazi
\[4.2^{-3}+10^{-1}=4*\frac{ 1 }{ 2^3 }+\frac{ 1 }{ 10 }=\frac{ 4 }{ 8 }+\frac{ 1 }{ 10 }\] then \[\frac{ 4 }{ 8 }+\frac{ 1 }{ 10 }=\frac{ 1 }{ 2 }+\frac{ 1 }{ 10 }=\frac{ 5+1 }{ 10 }=\frac{ 6 }{ 10 }=\frac{ 3 }{ 5 }\]
ghazi
  • ghazi
??
anonymous
  • anonymous
|dw:1348739944093:dw|
ghazi
  • ghazi
:)
ghazi
  • ghazi
\[3^{-2}=\frac{ 1 }{ 3^2 }=\frac{ 1 }{ 3*3 }\] can you do the rest?
anonymous
  • anonymous
1/9?
ghazi
  • ghazi
yea yea :)
anonymous
  • anonymous
yayy :P thats was soo hard :P lol
ghazi
  • ghazi
:D
anonymous
  • anonymous
soo.. next?? :P
ghazi
  • ghazi
of course...next please
anonymous
  • anonymous
this is too much..
ghazi
  • ghazi
??
anonymous
  • anonymous
lol i think you just showed me how to do this :/
ghazi
  • ghazi
yea yea..wait a sec :)
ghazi
  • ghazi
\[10^{-3}=\frac{ 1 }{ 1000 }=0.001\]
anonymous
  • anonymous
:D
ghazi
  • ghazi
clear?
anonymous
  • anonymous
sure.. let me just write this down, im afraid i might forget this in a few minutes :P lol
ghazi
  • ghazi
cool
anonymous
  • anonymous
thanks :)
ghazi
  • ghazi
next?
anonymous
  • anonymous
um.. i think thats it for now :/
anonymous
  • anonymous
i mean for this assignment :P
ghazi
  • ghazi
fine
anonymous
  • anonymous
okay fine, one more... Evaluate: (-8)0
ghazi
  • ghazi
-8*0=0 ..anything multiplied by 0 =0
anonymous
  • anonymous
ohh okay, well thats it :)
ghazi
  • ghazi
you sure ?
anonymous
  • anonymous
yup.. well im not done with everything.. i mean am done with this assignment.. :D

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