A rectangle is inscribed with its base on the x axis and its upper vertices on the parabola y=cos x. What is the maximum area this rectangle can have? What is the domain of this rectangle?

Is every rectangle is a parallelogram? true false

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.

If you could answer these your a life saver