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Firejay5Best ResponseYou've already chosen the best response.0
\[\frac{ 5x^3y^3z^4 }{ 20x^3y^7z^4 }\]
 one year ago

ShengBest ResponseYou've already chosen the best response.0
y^4 * 128 = 1 y^4 = 1/128 take 4th root for answer
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
what number are you doing 30 or 32
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
\[\frac{ 5x^2y^3z^4 }{ 20x^3y^7z^4 } = \frac{ 5 }{ 20 }\times \frac{ x^2 }{ x^3 }\times \frac{ y^3 }{ y^7 }\times \frac{ z^4 }{ z^4}\]
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
\[\frac{ x^2 }{ x^3 } = x^2x ^{3} = x ^{23}\]
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
\[ = x ^{1} = \frac{ 1 }{ x }\]
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
use these steps for each one of those terms: \[\frac{ y^3 }{ y^7 }\] \[\frac{ z^4 }{ z^4 }\] and then put them all together
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
I got \[\frac{  1 }{ 4 }\] x^1y^4z^1
 one year ago

ShengBest ResponseYou've already chosen the best response.0
oh i thought you mean whole equation = 32... then answer is just 1/4y^4
 one year ago

ShengBest ResponseYou've already chosen the best response.0
all the x terms, z terms cancel
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
not quite, the exponents on x and y should be negative, or you should put them in the denominator of your final answer like this \[\frac{ 1 }{ 4xy^4 }\] or \[\frac{ x ^{1}y ^{4} }{ 4 }\]
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
and yes \[\frac{ z ^{4} }{ z^4 } = 1 \] so it cancels
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
you can divide the exponents or subtract the exponents or both whenever you divide a fraction
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
another way to look at dividing variables with exponents...dw:1350609282625:dw
 one year ago

ShengBest ResponseYou've already chosen the best response.0
the x exponents cancel, why are you leaving them in? it's not a 2 on top, it's x^3
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
@tjones89 Actually both x's are 3s just looks like its a 2
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
hah you're right, its really small print...
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
yes so x's would be x^1 or x^0
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
x^2/x^2 = x^22 = x^0 = 1
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
x^3/x^3 = x^1 or X^3  x^3 = 0
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
did you mean to put divide instead of subtract for x^3  x^3?
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
you can divide or subtract depending on the number
 one year ago

Firejay5Best ResponseYou've already chosen the best response.0
like if it's the same you divide and if its different you subtract the big from little( 85)
 one year ago
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