what is 1/9x5/4??? i need this so i can pass one of my math standards so i do not go to summer school HELP ME

2-digit numbers less than 91 which are 1 less than a multiple of 10

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity