Question

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Answer 1

Answer:

6x +30=180

6x=150

X=25

Angle a=35

Angle b=80

Angle c=65

Step-by-step explanation:

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Used sum of angles in a triangle =180 degrees theorem

Answer 2

ABC is a triangle.

so the sum of angles is 180°

so,

angle A+ angle B + angle C = 180°

=> (x+10)° + (3x+5)° + (2x+15)° = 180°

=> x° + 10° + 3x° + 5° + 2x° + 15° = 180°

=> 6x° + 30° = 180°

=> 6x° = 180° - 30°

=> x° = (150/6)°

=> x° = 25°

so,

Angle A = (x+10)° = (25+10)° = 35°

Angle B = (3x + 5)° = (3×25) ° + 5° = 75° + 5° = 80°

Angle C = (2x+15)° = (2×25)° +15° = 50° + 15°= 65°

Hope this helps you.