Santa is on the flat ground outside a house. The Chimney is at a height of 25m. If Santa can launch the present at a force of X and a maximum angle of Y, how far from the Chimney does he need to stand to get the present into the chimney ?

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

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.

Standard deviation of 19,29,21,22,23