Respuesta :

seetha1980

Answer:

BC = 9

Step-by-step explanation:

Part-whole postulate is, AC = AB+BC

=> 9x+8+7x+2 = 26

16x+10 = 26

16x = 26-10

16x = 16

x = 1

BC = 7x+2 = 7*1 + 2 = 7+2 = 9

Answer:

9

Step-by-step explanation:

AC=AB+BC

substitute AC with 26, BC with 7x+2, and AB with 9x+8

26= (7x+2) + (9x+8)

26= 16x + 10

16x = 16

x=1

BC = 7x+2

BC = 7(1) +2

BC= 7+2

BC = 9

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