Find the perimeter of the trapezoid round to the nearest 10th if NEEDED

What are correct trigonometric ratios that could be used to determine the length of ln

What is the area of triangle abc if a = 8, b = 11, and c = 15?

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.