White people, Am I right?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Asequence is a function whose is the set of natural numbers