Cassie has 8 red and 12 yellow marbles. her mom doubles her collection. use tyhe distributive property to show how many she has now.

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Which number line correctly shows 0.8 + 0.3?

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?