What is difference between 5/12 and 1/4

Any greatly appreciated! you in advance. jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later she's sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions how much money did jody make? a.$65.00b.$5288.00c.$210.00d.$310.00

What is the value of the expression below? (81^2)^1/8

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?