Approx. 144 mileswe can find this length by use of pythagorean's threorom. we use it because there's a 90 degree angle in the triangle, first we go due north, then turn due west.
<span>
![a^{2}](https://tex.z-dn.net/?f=%20a%5E%7B2%7D%20)
+
![b^{2}](https://tex.z-dn.net/?f=%20b%5E%7B2%7D%20)
=
![c^{2}](https://tex.z-dn.net/?f=%20c%5E%7B2%7D%20)
, where a & b and the lines attached to the right angle, and c is the hypotenuse, also the length we're looking for.
![120^{2}](https://tex.z-dn.net/?f=%20120%5E%7B2%7D%20)
+
![80^{2}](https://tex.z-dn.net/?f=%2080%5E%7B2%7D%20)
=
![c^{2}](https://tex.z-dn.net/?f=%20c%5E%7B2%7D%20)
14400 + 6400 =
![c^{2}](https://tex.z-dn.net/?f=%20c%5E%7B2%7D%20)
20800 =
![c^{2}](https://tex.z-dn.net/?f=%20c%5E%7B2%7D%20)
c =
![\sqrt{20800}](https://tex.z-dn.net/?f=%20%5Csqrt%7B20800%7D%20)
≈ 144.2
</span>
Answer:
if it's 12% then: she's actually paid 88% with a tax of 3%.
Step-by-step explanation:
I did it