A girl has X pieces of cake. She gives Z pieces of each to her 5friends.
How many pieces of cake does she have left?

Please try to show work

Standard deviation of 19,29,21,22,23

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x