hello! your answer is 4. I just completed the assignment and got it correct. Hope it helps.
Answer:
12x = 84
Step-by-step explanation:

I am joyous to assist you anytime.
Answer:

Step-by-step explanation:
If two polygons are similar, then corresponding sides are in proportion.
The corresponding sides:
4 → x
y → 15
3 → w
2 → 6
z → 9
therefore:
<em>cross multiply</em>

<em>divide both sides by 6</em>
