Answer:
I think the answer is 6.096 Meters.
Step-by-step explanation:
I would say complementary because the angle degrees are the same
No it is not because you can't make it into a fraction.
The error is in the second step they subtracted 3 from both sides but it was a 3x, which you can not do.
Correction.
9x+18+3x=1
12x+18=1
12x=-17
x=-17/12