6x / x²
the reciprocal of a number n is 
the reciprocal of
is 
The product of a number and it's reciprocal = 1
Answer:
80%
Step-by-step explanation:
So you basically, just make it a ratio. Since a percentage is out of 100, just make the 5 into 100. To get 5 to 100, you times 20. Then you do the same thing to the 4 which you get 80.
9/40 because when you put it in fraction form its 225/1000 then you simplify!
<em>km</em>=<em>x, </em>the product being represented by <em>x.
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