# Tagged Questions

Questions on fractions, which are expressions (not values) of the form $\frac pq$.

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### Fractional Exponents - Is the sign discarded?

For example, 16^(3/4) Is the accepted as both -8 and 8 or just 8? I ask this because on an AS maths mark scheme it says to condone -8 Thanks
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### When graphing both X, and Y are fractions

In my instructions, I am told to place the point on the coordinate system. My X, and Y value are $$(\frac 52, \frac 72)$$ at this point I am a little lost. Would I flip it, and multiply it like so? ...
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### simplifying fractions

I have the following equation: $$\omega_m(s) = \frac{K_{\omega} \frac{K_m}{\tau_m s + 1}}{1 + K_\omega K_p \times \frac{K_m}{\tau_m s + 1}} V_r(s)$$ and I have been trying to bring in the following ...
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### Calculate weight based on body fat percentage

This is the YMCA method for determining body fat percentage for a female based on weight and waist size: $${-76.76+(4.5A)-(0.082B)\over B}=C$$ Where: A = Waist size in inches, B = Weight in lbs, C = ...
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### Can someone explain to me how this simplification of a fraction works?

Can someone explain to me why is the answer $30b^{3}/4(a+b)$ considering that on the previous line we multiply $[5b][a+b]/{[4][6b^2]}$. It's as if we multiply the numerator of the first term with the ...
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### Why Doesn't $2^{1/n}= 1/(2^n)$

Take $2^{1/n}$. Since $1/n$ can be simplified as $n^{-1}$, the original term can become $2^{n^{-1}}$. The exponents can then be multiplied to result in $2^{-n}$ which is $1/(2^n)$. However it is ...
$$\frac{x}{x^{-1/2}} = x^{3/2}$$ How? I don't see what is going on here. What rule is being used to achieve this amount?