Winnie has 7 soccer trophies she wants to display in an array. how many different arrays are really possible. ? explain

Ammonia molecules have three hydrogen atoms and one nitrogen atom. how many of each atom arein five molecules of ammonia

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Write the expression as a single natural logarithm. 2 in a - 4 in y