Tìm chữ số thích hợp ở dấu*để 281*(số có 4 chữ số)thoã mãn mỗi điều kiện sau a) chia hết cho 5 b)chia hết cho 2 c)chia hết cho cả 2 và 5

Find solution of the linear equation y = 2/3x + 1/3

Kelli swam upstream for some distance in a hour. she then swam downstream the same river for the same distance in only 6 minutes. if the river flows at 5km/hr, how fast can kelli swim in still water?

Emmanuel added 888 links per minute to his chain mail. allesia started 202020 minutes after emmanuel and added 131313 links per minute to her chain mail. how long had emmanuel worked when allesia caught up to him, and how many links had he added?