Each square on Olivia's chessboard is 21 square centimeters. A chessboard has 8 squares on each side. To the nearest tenth, what is the width of Olivia's chessboard?

2x+3y=12 x-y=6 solve the following system equations

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have