Question

Help! I NEED THIS DONE BY 8:50

Answer 1

x = 28

Explanation:

Properties of a triangle:

• Triangles have 3 sides
• The sum of a triangle's interior angles will always be equal to 180°.

Because we need the value of the triangle's interior angle, use the following formula to solve for x:

• 180 - x - y = z
• Since x and y are given, solve for z.
• 180 - 129 - 23 = z
• 28 = z
• z is the missing value, so for your problem, z is x.
• x = 28

Answer 2

The answer is 28°

Since the sum of all angles of a triangle is 180°
Then 23°+129°+x=180°
So 23°+129°= 152°

So, 152°+x=180°

Now to find x, you will take 152 to the other side of the equal sign so it will become

X= 180°-152°
X=28°