Jawabanmu

2014-04-26T07:07:40+07:00
Mo = 73.5 +  (\frac{8}{8+12} ) x 7 = 73.5 + 2.8 = 76.3
semoga membantu :)
1 2 1
2014-04-26T08:38:19+07:00
Dari data diatas diketahui : Ltb = 74 - 0.5 = 74.5 Lta = 80 + 0.5 = 80.5 P = Lta - Ltb → 80.5 - 74.5 = 6 delta 1 = 20-12 = 8 delta 2 = 20 - 8 = 12 Mo = 74.5 + (8/(8+6) × 6 = 74.5 + (8/14) × 6 = 74.5 + (48/14) = 74.5 + 3.4 = 77.9 semoga membantu ^_^