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 Posted: Wed, 3rd Jun 2015 19:15 Post subject: Maths problem. |
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I have my Exam coming up tomorrow and there was one question on my mock exam that I couldn't for the life of me figure out;
I remember the question very well, it simply said:
"Sovle: 3x <= 29" but it wasn't an "=" sign it was just a underscore under the "<" sign.
I had no idea how to solve this, I'm hoping for some answers here.
Thank you so much in advance.
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Nui
VIP Member
Posts: 5720
Location: in a place with fluffy towels
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| Posted: Wed, 3rd Jun 2015 19:40 Post subject: |
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Maybe this post is enough for you?
In this example, there is no difference to solving "3x = 29" for x, except you keep the inequality "<=".
I think you only need to flip the sign, if you multiply or divide by a negative factor. Otherwise it behaves just like the equations you are familiar with.
In case you want to solve "-3x <= 30" for x, you would divide by -3 and get "x >= -10"
These equations tell you that the solution is not just a single number, but rather a range of numbers starting at some point going in one direction.
Or you may want to read this page: http://www.mathsisfun.com/algebra/inequality-solving.html
Or just google for "solving inequalities"
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| Posted: Thu, 4th Jun 2015 01:29 Post subject: |
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I had a good read of that site and referred to YouTube videos to get a better understanding of the question overall; once I managed to establish what it was asking, the rest seemed quite simple.
Thank you for your help.
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Nui
VIP Member
Posts: 5720
Location: in a place with fluffy towels
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| Posted: Thu, 4th Jun 2015 04:25 Post subject: |
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no problem and good luck with the exam
kogel mogel
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| Posted: Thu, 4th Jun 2015 09:00 Post subject: |
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Rayne01's entire post history is filled with asking the hump programming and math questions 
1 and 2 are still amazing.
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Saner
Posts: 6877
Location: Uk
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| Posted: Thu, 4th Jun 2015 09:21 Post subject: |
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42
| ragnarus wrote: |
I saw things like that in here and in other "woman problems" topics so...... Am I the only one that thinks some authorities needs to be alerted about Saner and him possibly being a rapist and/or kidnapper ? |
Saner is not being serious. Unless its the subject of Santa!
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| Posted: Thu, 4th Jun 2015 10:27 Post subject: |
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| Yuri wrote: | | Rayne01's entire post history is filled with asking the hump programming and math questions |
and I think that is great! Surely better than asking for "where to by gloves?"  |
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kumkss
Posts: 4834
Location: Chile
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| Posted: Fri, 5th Jun 2015 04:39 Post subject: |
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| Posted: Fri, 5th Jun 2015 06:10 Post subject: |
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| Rayne01 wrote: |
I ask questions to ensure I'm doing things right or at least get the help to better my abilities.
Unless you would like me to ask about arbitrary nonsense? |
I would like you to ask how to upgrade your humour machine since it's apparently missing. 
And this is the useless void... so technically you can "ask about arbitrary nonsense"  
Oh found the gloves thread
http://www.nfohump.com/forum/viewtopic.php?t=100936
1 and 2 are still amazing. |
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