2c=14 (move 5 to the other side by adding it to 9)
c=7 (divide by 2 to get c on its own)
(r,theta) represents polar coordinate .
And in (r,theta), there is neither any restriction on r nor on theta. It means both r and theta can either be positive or negative .
For e.g. (2,30 degree), (2,-30 degree) both are correct .
So the given statement is true .
Angle 2 and 4 are vertical angles(opposite) thus they are congruent... set
9x+4=14+8x
9x-8x=14-4
X=10
Now substitute x back into angle 4 and solve
32 / (14 2/9) =
32 / (128/9) =
32 * 9 / 128 =
288 / 128 =
$ 2.25 per km
100%+5 1/2%= 105.5%
105.5/100=1.055
20*1.055=21.1
$21.10
Hope this helps :)
