7y+10x=-11 and 4y-3y=-15 what is y what is x

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.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Which is f(5) for the function –2x2 + 2x - 3?