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:
x=8+1/2
Step-by-step explanation:
Hope this helps, good luck!
Here are some Examples: :)

is 0.2222222222 and so on

is 0.4444444444 and so on

is 0.777777777 and so on
So it could be anything like 9 or 6 as long is its like this

Answer:
Yes
Step-by-step explanation:
Because 9, 12, and 15 are Pythagorean triples
Answer:
a. has one solution
b. infinite solution
Step-by-step explanation:
a.
2(x - 1) + 6 = 4x - 22
2x - 2 + 6 = 4x - 22
2x - 4x = 2 - 6 - 22
-2x = -26
x = 26/2
x = 13
b.
6(2x + 1) – 2 = 12x + 4
12x + 6 - 2 = 12x + 4
12x - 12x = 4 + 2 - 6
0 = 0