mworkhard222

I believe ur question is uncomplete.

nvm i got it, 20 right?

yeah ok, CPhill's solution is better lol

x is an exterior angle, there is a rule that says

so x = 29 + 82 = 111

$\:z=\frac{1}{2}-i\frac{\sqrt{3}}{2}$

so $z^{12}+\:\frac{1}{z^{12}}$ i belive is 2

Step by step:

$5x+14=k$

$5x=k-14$ (subtract 14 from both sides)

$x=\frac{k-14}{5}$ (divide both sides by 5)

idk if this is right

$x=\frac{9+\sqrt{519}}{6},\:x=\frac{9-\sqrt{519}}{6}$

We can solve this with proportions:

$\frac{4}{10}=\frac{14}{x}$

cross multiply: $4x=10\cdot \:14$

$4x=140$

$x=35$

35 dollars