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Using the Angle Bisector Theorem, BD / DC = AB / AC 6 / 9 = 2 / 3. Since BD + DC = 12, BD = (2 / 5) × 12 = 4.8\ Correct answer: a) 4.8 cm
463, 430, 369, 310, 243, 168
11, 12, 20, 58, 234, 1168
2, 6, 44, 462, 6930, 131670
97, 98, 107, 132, 181, 264
24, 12, 22.5, 45, 157.5, 708.75
23 30 44 65 92 128
42, 61, 78, 93, 102, 109
134, 138, 132, 142, 126, 146, 122
178, 184, 196, 216, 246, 286
44, 57, 81, 119, 170, 234, 311.