Answer:
x = 60
∘
Explanation:
As indicated by the markings, all the sides of this triangle are equal, and therefore all the angles of this triangle must be equal as well.
Let x be an angle,
so by the triangle sum theorem, we can say that:
3 x = 180
∘
x = 60
∘
https://socratic.org/questions/what-is-the-measure-of-angle-x-for-the-following-triangle#637450
I’m sorry bc I don’t know how to solve all of them but
#5 is C
#3, the equation is y=4
#4, the equation is x=-6
Without further info, like distances
check the picture
I believe AB=18.4 hope this helps you in your math class.