Answer: A
Explanation: the two triangles are proportional, so find the “proportion” between the two sides
12/4=3
3*3=9
3z=6
The missing side length? Or the missing angle?
Answer:
or 
Step-by-step explanation:
Using the zero product property, first step is to set the given equation,
, to zero. Then factorise the left side.
Thus,

Subtract 2 from both sides


Factorise the left side



Find the solution

Or

Or



The answer is:
or 
Exact form : 4/3
decimal form : 1.3