Math Is Fun Forum
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#2801 2011-11-23 09:30:20
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hopefully you will do better and there are less traffic jams for you there.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2802 2011-11-24 06:43:42
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
yes
Love is the key to life
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#2803 2011-11-24 07:00:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Happy Thanksgiving!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2804 2011-11-24 08:20:19
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
same to u
Love is the key to life
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#2805 2011-11-24 08:48:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Thanks, now I think I will have some turkey sandwiches.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2806 2011-11-24 09:11:29
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
ok u welcome
Love is the key to life
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#2807 2011-11-24 10:14:43
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
Still have not made those sandwiches.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2808 2011-11-25 05:51:06
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
k
Love is the key to life
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#2809 2011-11-25 05:52:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
How are you today? Any math problems you want help with?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2810 2011-11-25 07:33:36
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
good what about 30/20
Love is the key to life
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#2811 2011-11-25 08:04:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
First step is the same, try to break the top and bottom into smaller pieces.
Follow so far?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2812 2011-11-25 20:20:46
- kumara
- Member
- Registered: 2011-11-25
- Posts: 7
Re: Equations with parenthesis?
how to identify irrational numbers? are any rules to check the irrationality of a number?
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#2813 2011-11-25 20:25:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi;
Welcome to the forum.
Yes, in some cases there are methods of proof. Have you seen the proof of the irrationality of √2 and √3 ? Or the proof of the irrationality of their sum.
A more general test is the continued fraction test.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2814 2011-11-26 05:25:53
- kumara
- Member
- Registered: 2011-11-25
- Posts: 7
Re: Equations with parenthesis?
is the squreroot of 9 is ±3 or only 3?
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#2815 2011-11-26 05:42:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
When you use the square root operator then yoiu take only the principal value, the positive one.
The bottom of the page.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2816 2011-11-26 05:43:26
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
ok bobbym
Love is the key to life
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#2817 2011-11-26 05:46:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
Now we see that there is a 2 on top and a 2 on the bottom. We can cross them out and replace them with a one.
Okay?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#2818 2011-11-26 06:35:34
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
ok
Love is the key to life
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#2819 2011-11-26 06:38:40
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi;
As you already know 1*10 is 10 and 1*15 is 15 because any number times by 1 is the number. So we can shorten the work to look like this:
Now the question is can we reduce that further? Follow up to here?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2820 2011-11-26 09:37:25
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
yes
Love is the key to life
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#2821 2011-11-26 09:39:53
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
We can break 15 down into 3 * 5 and we can break 10 down into 2 * 5. Let's do that and see what happens.
We see a 5 on the top and in the bottom.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2822 2011-11-26 10:25:46
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
ok
Love is the key to life
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#2823 2011-11-26 11:47:35
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi;
Then we can cross out those 2 fives and put a one in their place.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#2824 2011-11-27 10:14:50
- Sarah Rebekah
- Member
- Registered: 2011-09-25
- Posts: 540
Re: Equations with parenthesis?
ok
Love is the key to life
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#2825 2011-11-27 11:19:00
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
As you know we can simplify that because 3 * 1 = 3 and 2 * 1 = 2 because any number times by 1 is the number itself.
So:
That is as much as we can do. So:
We are done!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline