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09-07-2020
Mathematics

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In triangle ABC , m angle A=(3x)^ , m angle B=(3x+10)^ , and m angle C=(4x-30)^ Find m m angle C

In triangle ABC m angle A3x m angle B3x10 and m angle C4x30 Find m m angle C class=

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5kimmie 5kimmie

10-07-2020

Answer:

B

Step-by-step explanation:

Interior angles of a triangle = 180°

3x°+3x+10°+4x-30°=180°

10x°-20°=180°

10x°=180°+20°

10x°= 200°

10x°/10=200°/10

x°=20°

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