Simplify the expression

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.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

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