hey every one so i am gonna. ask question for fun so its so simple the first person who answer will get 97 points and brainliest so my question is 1+1=

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?