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Ugo [173]
3 years ago
9

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
baherus [9]3 years ago
8 0

Answer:

Step-by-step explanation:

The sum of the angles in a triangle is 180 degrees. This means that

Angle A + Angle B + Angle C = 180 degrees

Looking at the triangle,

Angle A = (15x + 10) degrees

Angle B = (15x - 10) degrees

Angle C = (3x + 15) degrees

Therefore,

15x + 10 + 15x - 10 + 3x + 15 = 180

15x + 15x + 3x + 10 - 10 + 15 = 180

33x + 15 = 180

Subtracting 15 from the left hand side and the right hand side of the equation, it becomes

33x + 15 - 15 = 180 - 15

33x = 165

Dividing the left hand side and the right hand side of the equation by 33, it becomes

33x/33 = 165/33

x = 5

Angle A = 15 × 5 + 10 = 85 degrees

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3 years ago
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