1. First of all, this is a isosceles triangle, meaning measurement I=58°, which makes it way easier to find T.
[tex]58 + 58 + x = 180[/tex]
[tex]116 + x = 180[/tex]
[tex]x = 64[/tex]
1. m{t}°=64 m{I}°=58
2. This one is easy because algebra is the key.
[tex]100 - x + 30 + 4x + 7x = 180[/tex]
Add like-terms.
[tex]130 +10x = 180[/tex]
[tex]10x = 50[/tex]
[tex] \frac{50}{10} = x = 5[/tex]
x=5
The only thing that confuses me is the y. Is it 7xy, y as a side, or what? Feel free to reply
