In the question, the angles proves that this triangle is an isoceles triangle.
So we can set the two sides equal:

Add

to both sides of the equation:

Divide both sides by 2:

We find that

. AC is also x, so, it is 6 too.
It is D segment addition postulate
Answer:
C and $320.45
Step-by-step explanation:
I think it's C because this is the full function :

And to get the b part of the question i just put the number in

I'm not a 100% sure, sorry if it's wrong
Step-by-step explanation:
we know that product of means is equal to product of extremes so extremes are 5 and x and means are 60 and 3....
5×x=60×3
5x=180
X=180/5
X=36 Answer