5. This is the best way to separate sugar and sand mixture.

Explanation:

The sugar would dissolve in water. You could then pour off the solution and wash the remaining sand with a bit more water. Heat the water to evaporate it from the sugar, and the two are separated

x=3

step-by-step explanation:

this is really simple i saw that there was only one term (5x) and thought if that was 15 what would i have to multiply everything else to get it there? well if 5x became 15 then x would have to be 3 so plug the 3 in the x for the other equations and you get 15 for the other ones. so there you go. : )

i would get some file cabnitsits to store all my documents and paper work, then i would make sure to always keep my desk clean and organzed by using sticky notes to mark a stack of papers. and etc. but mainly i would just stay clean and organized because it will make lfe alot eaisier trust me. hope this !