This is about simultaneous equations.
<u><em>p = s has been proved below. </em></u>
p + q = 25 - - - (eq 1)
r + s = 25 - - - (eq 2)
q = r - - - (eq 3)
- Let's put r for q in eq 1 to get;
p + r = 25 - - -(eq 4)
- Let's subtract eq 2 from eq 4;
(p + r) - (r + s) = 25 - 25
p + r - r - s = 0
p - s = 0
p = s
Read more at; brainly.com/question/15165519
Step-by-step explanation:
x+90+4x-75=180
add all the sides together and since its a triangle they equal to 180
YOU CAN WRITE AN EQUATION OF 7.5 Divide 2.5 = any letter
Answer: 
This is the same as saying 18*sqrt(2) or you could say 18√2
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Explanation:
We'll be using this square root rule: 
So we could have this as our steps:

Therefore, 
The basic idea is to first combine the roots using that rule. From there, we factor the radicand such that we pull out the largest perfect square factor. This will allow us to break the root apart and fully simplify it.
3+2+1/2+1/7
5+1/2+1/7
5+7/14+2/14
5+9/14
5 9/14