A rope is 13 feet long. How many ways can the rope be cut into two or more pieces so that the length of each piece is a prime number

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Ineed with number 17 i don’t get it at alll

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]