the "off-peak" weekly average cost of hiring a caravan is £480.In July the average cost increases to £850.What is the percentage increase in cost?

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.