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Which equation could be used to find the value of x in the triangle below?
4x + 10
6x - 10
А
12x + 20 = 180
B
12x = 180
С
12x - 20 = 180
D
8x - 10 = 4x + 10

Which equation could be used to find the value of x in the triangle below 4x 10 6x 10 А 12x 20 180 B 12x 180 С 12x 20 180 D 8x 10 4x 10 class=

Respuesta :

Answer:

Step-by-step explanation:

Answer is B

Answer:

B

Step-by-step explanation:

4x+10+6x-10+2x=180°

4x+6x+2x=180°+10-10

12x/12=180°12

x=15° check :

4x+10+6x-10+2x=180° then x=15°

4*15+10+6*15-10+2*15=180°

60+10+90-10+30=180°

180°=180°