There are 10 yellow, 6 green, 9 orange, and 5 red cards in a stack of cards turned facedown. Once a card is
selected, it is replaced. Find each probability.

Two cards that are not orange

Two cards that are neither red nor green

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.

Asap! i need this done today and i really don’t understand it. some one ! will mark

Can someone plz me with 11,12,13 plz show work