Answer:
<em>x</em>=28, <em>y</em>=12
Step-by-step explanation:
The squiggly symbol? This means the shapes/angles are congruent, meaning that if you rotated them around, they would match.
x's match runs along the same line as it's match, and same goes for y's. Imagine rotating around the lower triangle and lining it up with the upper triangle.
Step-by-step explanation:

( vertically opposite angles)



Answer:
12
Step-by-step explanation:
Since the two angles are vertical angles, they are congruent and therefore 6x+7=8x-17
2x=24
x=12
Hope this helps! PM me with more questions.
Answer:
6i
Step-by-step explanation:
First, I think you mean square root 18 and square root 2. (Let me know if thats right.)
Thus we have square root -36, which is simplified to 6i (we have to use imaginary numbers)