anonymous
  • anonymous
https://gyazo.com/df9486155c5825f62a44db942a6f1a49
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
freckles
  • freckles
Have you solved -7x-11<-109?
anonymous
  • anonymous
no i need help.
freckles
  • freckles
your objective is to isolate x. Try first isolating the -7x by adding 11 on both sides.

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freckles
  • freckles
what do you get after doing that?
anonymous
  • anonymous
0?
anonymous
  • anonymous
xD i dont know ho to this this is a pr test
anonymous
  • anonymous
pre*
freckles
  • freckles
isn't a pretest testing to see where your knowledge is already at? also what happen to your inequality when you added 11 on both sides? It is like you dropped the whole thing or something... you had -7x-11<-109 and somehow you made all of it disappear? Adding 11 on both sides looks like this: -7x-11+11<-109+11 we did this to get -7x by itself this works because -11+11 is 0 so you have -7x+0<-109+11 or since adding anything to zero is still that anything you have -7x<-109+11
anonymous
  • anonymous
yes thats a pretest but i dont know this stuff
anonymous
  • anonymous
i knew it was 0 so it stays the same?
freckles
  • freckles
I say try your best on the pretest then. I'm guessing since it is a pretest it is to see where the class is so the teacher knows where to begin, right?
freckles
  • freckles
If you don't know this, wouldn't you want your teacher to teach it?
freckles
  • freckles
yes -11+11 is zero but it doesn't make the inequality disappear you still have to add 11 to the other side as I did above
freckles
  • freckles
can you try simplifying the right hand side of the inequality
anonymous
  • anonymous
can you layout the problem?
freckles
  • freckles
so you can't do the -109+11?
anonymous
  • anonymous
i honestly dont know this stuff im trying my best to learn
freckles
  • freckles
-109+11 is the same as -(109-11) do you know how to take away 11 from 109?
anonymous
  • anonymous
yes
anonymous
  • anonymous
98
freckles
  • freckles
yes so -109+11 is -98
anonymous
  • anonymous
you there bud?
freckles
  • freckles
me?
anonymous
  • anonymous
sorry i didnt see you typing
freckles
  • freckles
\[-7x<-98\] I will leave the rest to you because this is a test. But I will give a 2 hints: To undo the multiplication think division. Also multiplying or dividing both sides by a negative number of an inequality will change the direction of the inequality.
anonymous
  • anonymous
its A
freckles
  • freckles
yes you divide both sides by -7 but -7 is negative so you have > instead of < so we have x>-98/-7=14 x>14 which means you want everything bigger than 14
anonymous
  • anonymous
ik it
anonymous
  • anonymous
so i got it right it was A?

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