Three marbles are assigned to three people and a box is addressed to each of them. The marbles are inserted into the boxes at random so that each box contains exactly one marble. Find the probability that at least one marble is sent in the proper box.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Explain in a minimum of 2 sentences how to graph the equation of the absolute value function given a vertex of (-1,3) and a value of “a” equal to ½.