Answer: 8 (The second option).
Step-by-step explanation:
1. To solve this exercise you draw a line to a point O, this lines will bisect the angle of Z∠60°. Then will obtain two into two right triangles with two angles of 30° at the point Z.
2. The lenght XY will be twice the lengt XO or YO.
3. Let's calclate XO as following:

4. Then, XY is:

Answer:
7groups
Step-by-step explanation:
15+6/3=7groups
The last one is the answer


multiply both sides by .4 to isolate the x variable.

x = 1.6
The answer is 30 hope it helps