In the triangle below, what is the length of mn

A. 20

Step-by-step explanation:

The MNL triangle is isosceles, because it has two equal angles

MLN = 50 = MNL

Then, as it is an isosceles triangle, ML = MN. We already know that ML = 20, thus MN has to measure the same. We conclude MN = 20.

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80