What the answer for there are 3 boxes of tangerines each box has 93 tangerines the tangerines will be divied equally among 9 classrooms how many tangerines will each classroom get?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.