Answer:
Option B \((\frac{13}{4})\°\)
Step-by-step explanation:
we know that
Vertical Angles are the congruent angles opposite each other when two lines cross
so
In this problem
\((3x+4)\°=(7x-9)\°\)
solve for x
\(7x-3x=4+9\)
\(4x=13\)
\(x=(\frac{13}{4})\°\)
