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.
[tex]50 = 2x \\x=25[/tex]
plug in 25 in 2x and you would get 50°
Since the sum of a triangle is 180° you could set up an equation [tex]50+50+5y+10=180[/tex]
Then, add 50+50=100+10=110
then you would then have [tex]5y+110=180\\[/tex]
subtract 110 from 180, leaving you with 70
[tex]5y=70[/tex]
then divide and you would get 14
Check:
5(14)+10+50+50= 180
