Question

Is the inequality sometimes, always, or never true?
-2(2x+9)>-4x+9

Answer 1

first multiply out on the left to get rid of the parentheses using the distributive property

Answer 2

you get \(-4x-18>-4x+9\)
now you can add \(4x\) to both sides, which means all the \(x\)'s are gone, and you get \(-18>9\)

Answer 3

then you ask yourself "is minus eighteen greater than nine??"

Answer 4

no...

Answer 5

yeah i didn't think so either

Answer 6

Aha. So its never true?

Answer 7

never, not even once !

Answer 8

thanks! :)

Answer 9

yw