What is 76,550,000 written in scientific notation? ​

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 =

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Can someone me and do the problem plz so i can understand it more better