Given: E is the midpoint of line AC, DE=EC
prove: line DE= line AE

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

If f(x)= 3x+6 which of the following is the inverse of f(x)

Abarge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroad cars is 4 tons each.bhow many railroad cars can the barge haul?