20% if it will determine the pay of how much it is.
Answer:
a. 3x^2 = 81
x^2 = 27

Step-by-step explanation:
3/4 is greater hope that helped
The answer is 78
Explanation:
65 / 5 = 13
(13 = 1/6)
13*6 = 78
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:
