anonymous
  • anonymous
evaluate the power fraction f(x)=x^5/4 = 81
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Is the power of x equal to 5/4?
anonymous
  • anonymous
It is f(x)=x^5/4 x=81
anonymous
  • anonymous
If x=81 then subs it....ie 81^5/4...fourth root of 81^5 in other words

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anonymous
  • anonymous
If f(x) = 81 then x=81^4/5
anonymous
  • anonymous
depends on which is the correct question
anonymous
  • anonymous
4sq 81^5
anonymous
  • anonymous
is that right that is what I have
anonymous
  • anonymous
The power of x in the original quetion is 5 then?
anonymous
  • anonymous
do you know how to do sq. root 3y+2=4 yeah I got that
anonymous
  • anonymous
it says solve there are no examples in my book or the dvd's i have
anonymous
  • anonymous
The question posted can be solved but please tell me what the power of x is in the question
anonymous
  • anonymous
power of x was 5
anonymous
  • anonymous
power of x was 5/4
anonymous
  • anonymous
ok...then if x^5/4 =81...then x= 81^4/5
anonymous
  • anonymous
so we make it a reciprocal
anonymous
  • anonymous
The power 5/4 means the 5th power and then take the 4th root of the answer
anonymous
  • anonymous
4sq.81^5
anonymous
  • anonymous
So to get rid of it to leave x...you do the opposite ......5th root and 4th power
anonymous
  • anonymous
5sq.81^4
anonymous
  • anonymous
5th rt of 81^4.....only if f(x)=81 was your question
anonymous
  • anonymous
f(x)=x^5/4 x=81
anonymous
  • anonymous
If x=81..then simple...fourth rt of 81^5
anonymous
  • anonymous
Good there then...sorry it took a while to sort out the question
anonymous
  • anonymous
okay got it

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