Answer:3.9
Step-by-step explanation:
20 cm is the answer good luck
<span>D) perpendicular bisector <em>I believe.
</em></span>
X=7
Step 1: add nine to both sides it becomes
-2x=-23+9 —> -2x=-14
Step 2: divide by -2 on both sides it becomes
X=-14/-2 —> x=7
