In a triangle the three angles are x°, 2x° and 3x° a) Show that 6x = 180

b) Find the value of x
x = °

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?