What is three times a number decreased by 21 is 57 in numberic form

Triangle inequality theorem state if each set of three numbers can be the lengths of the sides of a triangle. 1. 9, 8, 22. 2. 5,10,12. 3. 7,10,22. 4. 4,11,12. 5. 11,9,10. 6. 10,4,19. 7. 3,12,10. 8. 4,3,2. 9. 6,5,13. 10. 7,12,20. me .

How many lines can be drawn through points j and k? 0 1 2 3

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)