3 years ago

Help me please. I dont remember this and didn't see itnon my state testing yesterday. This isnt a test, just a study guide.

Mathematics

1 answer:

RideAnS [48]3 years ago

8 0

Answer:

x = 25

Step-by-step explanation:

Assuming Angle A, B and C are angles in a triangle.

∠A + ∠B + ∠C = 180º

(2x - 20) + (120) + (x + 5) = 180

2x - 20 + 120 + x + 5 = 180

3x + 105 = 180

3x = 75

x = 25

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