anonymous
  • anonymous
How do you do inequalities?
Mathematics
katieb
  • katieb
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amistre64
  • amistre64
do you have an example? they are just like equations but with a slight hiccup in them
amistre64
  • amistre64
when we multiply or divide them by a negative number; we need to reverse the symbol, and heres why 5 > 3 ; multiply both sides by -1 -5 > -3 is false; so we flip the symbol to account for it
amistre64
  • amistre64
-5 < -3

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anonymous
  • anonymous
wait what
amistre64
  • amistre64
'wait what' is not a comprehensible response that i can really respond to.
anonymous
  • anonymous
sorry heres one i need help with p+(-3)>-6
amistre64
  • amistre64
ok how would we solve for 'p' if this was an equation?
anonymous
  • anonymous
add 3 to both sides?
amistre64
  • amistre64
then do that with this :) p > -3 is the answer
anonymous
  • anonymous
oh well what about this one? -2y<10 - this btw is a less than or equal to sign
amistre64
  • amistre64
-2y
anonymous
  • anonymous
that i do not know but i think it has something to do with division
amistre64
  • amistre64
your are right about that :) divide both sides by -2
anonymous
  • anonymous
i don't get why
amistre64
  • amistre64
-2y has a -2 stuck to it right? its is multiplied right on there..
amistre64
  • amistre64
how do we undo multiplication?
anonymous
  • anonymous
oh division
amistre64
  • amistre64
then to unstick it; we divide by -2 right :)
anonymous
  • anonymous
then it would be -5
amistre64
  • amistre64
yes .... but we have the hiccup here... we had to multiply or divide the y by a negative number... right?
anonymous
  • anonymous
what do you mean by hiccup
amistre64
  • amistre64
i mean that they dont tell you this little fact when you do equations because its redundant..... but whenever you have to multiply the variable by a negative number; ALWAYS flip your sign around..
anonymous
  • anonymous
ok
amistre64
  • amistre64
an = sign flip around looks like = so its a step they omit to tell you
amistre64
  • amistre64
> flips around to be < < flips around to be > = flips around to be =
anonymous
  • anonymous
so the answer would be y \[\ge\]-5
amistre64
  • amistre64
exactly :)
anonymous
  • anonymous
thanks a lot how do i give u a medal
amistre64
  • amistre64
hit f5 if you wanna refresh your browser and youll see a good answer next to my name
anonymous
  • anonymous
Alternatively you can just swap the left and right sides by adding.. -2y < 10 +2y - 10 + 2y - 10 ============== -10 < 2y Then do the division normally.
anonymous
  • anonymous
hey i know u polpak
anonymous
  • anonymous
remember sabb from yesturday?
anonymous
  • anonymous
vaguely yes.
anonymous
  • anonymous
thats me i forgot my password so i made a new account
anonymous
  • anonymous
lol ok
anonymous
  • anonymous
serioiusly

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