K, remember
(ab)/(cd)=(a/c)(b/d) or whatever
also
and
and
![x^ \frac{m}{n}= \sqrt[n]{x^m}](https://tex.z-dn.net/?f=x%5E%20%5Cfrac%7Bm%7D%7Bn%7D%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D%20%20)
and
and
and
(a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)
so
=
=
=
=
=
=
(ab)/(cd)=(a/c)(b/d) or whatever
also
and
and
and
and
and
(a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)
so
75% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a sing
1 answer:
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That's a quadratic equation in 
, which means we get an extra square root and 
at the end.
We factor,
We factor,