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