Mean of the data of 24 values is 41.75 find (a) the mean if the value 68 is included in the data.
(b)the mean if the value 36 is excluded from the data.

Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14

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.

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)