If John ran a 40 yard dash, how far did he run in decimeters?​

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

How to solve a simultaneous equation involved with fractions?