x=4, because 10+(4*2)=10+8=18 and since it is a rectangle the sides are the same.
Answer:
<h2>u = 2T - v</h2>

Cross multiply
We have
2T = u + v
u + v = 2T
Move v to the right side of the equation to make u stand alone
We have the final answer as
<h3>u = 2T - v</h3>
Hope this helps you
Answer
0.75 or 3/4 is the answer (degree)
I just solved for the angles and use a graphing calculator to find the din and cosine values and multiply them
The greatest common factor is 2a
Let k be the scale factor relating two similar prisms

and

, such that for corresponding parts of prisms

and

(for heights, in particular) we have

. In our case

.
For surfaces area we have

.
So, the right answer is 4:25 (choice B)