如圖, ΔABC 中, AD是∠BAC的角平分線.若BC : DC =12 :8, AB = AC = 26, 求AB及AC的長 As shown in the figure, in ΔABC, AD is the angular bisector of ∠BAC. If BC: DC = 12: 8, AB = AC = 26, find the length of AB and AC

300b(x) is graphed by the functio

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post