Hi peeps. im feeling really stupid right now (or im just lazy to think.) what is a fractional unit? explain with examples, definitions, anything u could think i really need halp

Grandma made an apple pie. josh and his brother joe finished 4/5 of it. then 3 friends came over and shared the left over. how much pie did each friend eat

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?