What are you looking for. slope?
x=76
y=4
I think that answer should be right. Since it is isosceles the base angles will be the same and the top angle is an angle bisector which means that the angle split on top has even splits. Since no other side lengths- or any lengths at that matter- are give, it is safe to assume that y=4.
Answer is 100/55 = n/620 Reasoning is the percentage has a max of 100 and you do is 100/55 = to the number for N/620
1 1/2 or 3/2 because 1/2 divided by 1/3 is equal to that