Answer:
x = 6
Step-by-step explanation:
First, separate the problem into 
Then, Subtract 9 from both sides of the equation. 
Simplify. 
Multiply 3 to each side, which will give you -2x = 4x - 36
Subtract 4x from each side -2x - 4x = 4x - 36x - 4x
Combine like terms: -6x = -36
Divide both sides by -6
Your answer should be 6
<em>(sorry for the late answer)</em>
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
In the right triangle ABC
Applying the Pythagorean Theorem

substitute the given values

solve for BC



your equation is linear, so there isn't any arch
Answer:
(2)
Step-by-step explanation:
1.

which is further simplified to

which is 20.
2.