7) a=70°
b=140°
8) a=74°
b=106°
c=41°
d=115°
c^2/3 should be something to that of it's equivalent.
21 because you do 7 times 3. you do this becuase you did times three to the other side
Ok I’m so sorry I can’t answer this but if no one does then check out wolframalpha.com
That’s where I used to get all my answers from cuz it can solve almost any mathematical problem! <3
Hope that helps in a way!
B. 9x because 3+3+3 would equal 9