Write the related facts for the set of numbers.
3,7,21

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

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

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?