The triangle is isosceles, so the bottom angles have the same measure. So, the angles measure 2x, 3x+5 and 3x+5.
The sum of the interior angles of a triangle is 180, so we have

So, angle A measures

Answer:
a). 7
Step-by-step explanation:
3x-4=17
3x-4+4=17+4
3x=21
3x/3=21/3
x=7
Answer:
7 1/15
Step-by-step explanation:
3 2/5 + 3 4/6 = 7 1/15
Answer:
N=2
Step-by-step explanation: