The scale on a map is 1 cm : 6 km. If two cities are 13 cm apart on the map, what is the actual distance between the cities?
1 answer:
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Rembber
![\sqrt[n]{x^m}=x^\frac{m}{n}](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7Bx%5Em%7D%3Dx%5E%5Cfrac%7Bm%7D%7Bn%7D%20%20)
and
so
![\frac{8}{ \sqrt[7]{x^{15}} }= \frac{8}{x^ \frac{15}{7} }=8x^{(\frac{-15}{7})}](https://tex.z-dn.net/?f=%20%5Cfrac%7B8%7D%7B%20%5Csqrt%5B7%5D%7Bx%5E%7B15%7D%7D%20%7D%3D%20%5Cfrac%7B8%7D%7Bx%5E%20%5Cfrac%7B15%7D%7B7%7D%20%7D%3D8x%5E%7B%28%5Cfrac%7B-15%7D%7B7%7D%29%7D%20%20)
and
Answer:
Step-by-step explanation:
We can substitute the given values of ,
, and
to find the value of this expression.
We know that <em>two negatives make a positive. </em>This means that will be the same this as
Adding a negative is the same as subtracting a positive.
Hope this helped!