A researcher finds that 15% of all commuters in a metropolitan area take the train to work. The researcher polls 250 people in t
2 answers:
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Answer:
The x's cancel so definitely is choice C: 1/9
Step-by-step explanation:
We have root( 1/(x^2) ) * root ((x^2) / 81)
simplifying this we get as follows:
root( 1/(x^2) ) * root ((x^2) / 81)
= *
= ( 1/x ) * (x/9)
the x's cancel
= 1/9
choice C 1/9