If 2.1x+4.2y=14.7 and -5.7x-1.9=-11.4
what is the solution?

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

What rotation was applied to triangle def to create d’e’f’?