Ireally need some with this, forgot how to do it, !

Answer

The answer is 49 degrees

Explanation

The exterior angle, the angle outside the triangle, it going to equal the angles inside the triangles.

w-19+w=w+30      Combine like term so combine the w's to be 2w

2w-19=w+30         Add 19 to both sides 30+19=49

2w=w+49              Subtract w from both sides 2w-w=w

w=49

To check your work you can plug 49 into w and you get that the angles inside the triangle is 79 and the exterior angle is 79 when you plug back in 79 and 79=79

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )