I have a work sheet from my algebra 2 class involving greater than and less than signs and im confused can anyone help?

- anonymous

- jamiebookeater

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- anonymous

\[-12\le d +7\]

- marihelenh

You need to isolate the variable. So, subtract 7 from both sides.

- anonymous

What do you get

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## More answers

- anonymous

i forgot the steps and the special tricks that are specificaly used when it involves a greater than or less than signs @twistnflip

- marihelenh

The only thing you really have to remember is that when multiplying or dividing by a negative number, the sign flips.

- anonymous

\[-19\le d\]

- marihelenh

Yes, that is correct! You don't have to do any graphing or such right?

- anonymous

nope! Thank you i have a couple more if i can give you my final answers?

- anonymous

yes

- anonymous

go ahead I will check them

- anonymous

okay i gotta due them ill tag you guys when im done

- anonymous

ok

- anonymous

\[1z-1\ge 2z-3\]

- anonymous

and i got

- anonymous

\[z \ge 2\]

- anonymous

eek, check your work on that one, I got something different

- marihelenh

What was your work @mmrachel ?

- anonymous

JK nevermind, I need to check my work. You are correct, sorry about that

- anonymous

so i divided the negative 1 and didnt change any of the signs was i supposed to?

- marihelenh

If you divide by a negative, you flip the sign.

- anonymous

correct can you please type your work, it may be easier to check it

- anonymous

ok i will

- marihelenh

You had the correct answer, the sign just needed to be flipped.

- anonymous

so instead of greater than its less than?

- anonymous

yes

- anonymous

anymore?

- anonymous

yes

- anonymous

\[\frac{-2 }{ 3 }r \le \frac{ 7 }{ 12 }\]

- anonymous

what did you get?

- anonymous

\[r \le \frac{ 21 }{ 24 }\]

- anonymous

eek ok, I actually check my work on this one and that is wrong, mind typing your steps?

- anonymous

i times both sides by the recipricole 3/-2 on both sides then i just multiplied 7/12 by 3/-2

- anonymous

ok well silly, you forgot to simplify lol. what do 21 and 24 have in common

- anonymous

3?

- anonymous

it simplifies to -7/8 (you accidentally cancelled the negative)
final answer would be \[r \ge \frac{ -7 }{ 8 }\]

- anonymous

make sense?

- anonymous

yeah! lol i didnt do half bad. thanks again,

- anonymous

no problem!!

- anonymous

that was it

- anonymous

great where should I post my english 2? I will post it in english and tag you will you come try?

- anonymous

yes i will

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