I'm learning the exact same thing so give me some question and I can see what I can do!
Answer:
this is not an answer sorry, but someone answered me with a link and I opened it and it virused my phone
Answer:
y=14
Step-by-step explanation:
Since this is an isosceles triangle due to opposite sides being congruent, the base angles would also be congruent.
plug in 25 in 2x and you would get 50°
Since the sum of a triangle is 180° you could set up an equation 
Then, add 50+50=100+10=110
then you would then have 
subtract 110 from 180, leaving you with 70

then divide and you would get 14
Check:
5(14)+10+50+50= 180
Answer: 
-3 times the square root of 5
=============================================
Explanation:
Let 
Replace all the root 5 terms with x and we go from

to

From here, combine like terms to get

and the last thing to do is replace the x with sqrt(5)

Meaning that,


Answer:
x=0 is your answer
Step-by-step explanation:
(6 + 8) + x = 14
14+x=14
x=14-14
x=0