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laila [671]
4 years ago
11

PLEASE HELP CORRECT AND 1ST ANSWER IS BRAINLIEST

Mathematics
2 answers:
poizon [28]4 years ago
6 0

Answer:

<em>m<A = 40 deg</em>

<em>m<B = 60 deg</em>

<em>m<C = 80 deg</em>

Step-by-step explanation:

2x + 3x + 4x = 180

9x = 180

x = 20

m<A = 2x = 2(20) = 40

m<B = 3x = 3(20) = 60

m<C = 4x = 4(20) = 80

m<A = 40 deg

m<B = 60 deg

m<C = 80 deg

Citrus2011 [14]4 years ago
3 0

Answer:

A: 40°, B: 60°, C: 80°

Step-by-step explanation:

The sum of ratio units is 9. The sum of angles is 180°, so each ratio unit stands for 180°/9 = 20°.

A = 2×20° = 40°

B = 3×20° = 60°

C = 4×20° = 80°

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