ashlynn143
please help MEDALS WILL BE GIVEN!!!
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ashlynn143
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\[options a. b \ge 8 ,b \ge -6 , c. b \le 8 ,d. b \le -6\]
blahblah_who_cares
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What is the question?
ashlynn143
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oh yah ok
\[-b-7 \le -1\]
wetlife
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solve algebraically. u got this thing!
ashlynn143
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i need help that is why i asked
blahblah_who_cares
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Well think of the question with the less than or equal to symbol as an equal sign. Just remember if you divide by a negative the symbol will become a greator than or equal to.
wetlife
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One treats an inequality just like and equation algebraically except that the inequality is reversed when multiplied or divided by a negative number.
blahblah_who_cares
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So what answer did you get ashlynn?
ashlynn143
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not yet hold on let me think then i will ask
ashlynn143
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so is it \[b \le -6\]
ashlynn143
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or d
blahblah_who_cares
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Well I think you forgot 1 step that both I and wetlife have said about multiplying or dividing by negatives.
DLS
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b>-6 i suppose
ashlynn143
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i didn't need to here i will show you how i got it
DLS
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\[-b-7 \le -1\]
\[-b \le 6 \]
b>=-6
blahblah_who_cares
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DLS the problem with your work is that your less than or equal to sign cannot end up as a greator than sign. It is impossible for that to happen.
ashlynn143
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\[-b - 7\le -1 \]
\[-b - 7 = -1\]
\[-b = 6\]
\[-b \le 6\]
blahblah_who_cares
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yes ashylnn, but you are missing the last step. You must simplify equation. .You are not looking for what negative b is, but you are looking for just the variable b
ashlynn143
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yes so i would divide it like this ??
|dw:1357805403002:dw|
blahblah_who_cares
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ummm.. no. Because you want b on one side, you would not divide both sides by b. Hint: -5= -1*5.
ashlynn143
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what where would you get a negative 5 and that is a 6 in my drawing
wetlife
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b/b=1 if b not 0 and 6/b=6/b.
wetlife
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now you have -1<=6/b
blahblah_who_cares
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ashylnn my point is to help. It is not to give answers. The example of -5 = 5*-1 is an example to help give you a hint. It has nothing to do with your problem. It is to give you an idea of where you need to fix
ashlynn143
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ok i thought that it involved my question
blahblah_who_cares
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Well I learned something in the process, so thank you.
ashlynn143
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what is that
ashlynn143
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what is the * thing in the hint / example
blahblah_who_cares
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it means times
ashlynn143
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ok
ashlynn143
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but isn't it that what you do on one side you do to the other to
blahblah_who_cares
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Yes. That is correct. So what do you understand so far?
ashlynn143
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ok so i think i know how to solve the problem correctly this time
ashlynn143
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|dw:1357806023062:dw|
ashlynn143
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right
blahblah_who_cares
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Correct. I am assuming that you either multiplied both sides by -1 or divided both sides by -1
ashlynn143
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i multiplied both sides but i got it correct??
blahblah_who_cares
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multiplying by both sides is the correct way. I am also saying that if you had divided it by -1 you would have gotten the same answer. Both ways are correct
ashlynn143
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ok thank you
blahblah_who_cares
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Also I have noticed you are using the asteric symbol. Just remember that asteric symbol is only used on the computer. When done on paper, the correct way is to use a dot in the middle|dw:1357806252885:dw|
ashlynn143
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yes i know that as well because is you were to do x on a problem like this it would get someone confused
ashlynn143
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ok thanks you very much maybe now i can kinda do the other ones good and if there is really hard one can i ask you for help?
ashlynn143
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@blahblah_who_cares ^^^^
blahblah_who_cares
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Well Im probably going to crash for the night pretty soon. Its 12:30 am for me.
ashlynn143
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ok thanks
ashlynn143
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good night