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#6776 2016-05-01 18:52:40

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

#5813. 5 pens and 6 pencils together cost $9 and 3 pens and 2 pencils cost $5. Find the cost of 1 pen and 1 pencil separately.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6777 2016-05-01 20:42:14

Relentless
Member
Registered: 2015-12-15
Posts: 624

Re: 10 second questions

Hi (:

For #5812 I agree with bobbym. Substituting ganesh's values into the second equation makes 21 not 35. Probably you solved 7x-y=35 not 7x-2y=35

Last edited by Relentless (2016-05-01 20:45:14)

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#6778 2016-05-01 23:41:53

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

Solution #5812 : bobbym is right. Conceded. Neat work!

The solution set #5813 is correct. Neat work, Relentless!

#5814. Solve: x + y = 5 and 2x - 3y = 4.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6779 2016-05-02 02:11:23

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6780 2016-05-02 16:28:08

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set in #5814 is correct. Good work, bobbym!

#5815. Solve: 3x - 5y - 4 = 0 and 9x = 2y + 7.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6781 2016-05-02 16:42:19

Relentless
Member
Registered: 2015-12-15
Posts: 624

Re: 10 second questions

Hey! smile

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#6782 2016-05-02 16:49:42

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6783 2016-05-03 16:55:37

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set #5815 is correct. Neat work, Relentless and bobbym!

#5816. The Greatest Common Divisor of two numbers is 103 and their Least Common Multiple is 19261. If one of the numbers is 1133, find the other.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6784 2016-05-03 23:36:31

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6785 2016-05-04 00:01:57

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution #5816 is correct. Neat work, bobbym!

#5817. Find the Least Common Multiple and Greatest Common Divisor of the following integers by prime factorization method: 72, 90, 120.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6786 2016-05-04 00:19:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6787 2016-05-04 00:53:46

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution #5817 (two parts) are correct. Neat work, bobbym!

#5818. Solve: 15x + 4y = 61 and 4x + 15y = 72.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6788 2016-05-04 01:53:47

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6789 2016-05-04 17:33:10

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set in #5818 is perfect. Excellent, bobbym!

#5819. Solve:


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6790 2016-05-04 17:46:15

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6791 2016-05-04 23:54:14

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set #5819 is perfect. Magnificent, bobbym!

#5820. Solve for x and y:



It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6792 2016-05-05 04:45:33

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6793 2016-05-05 16:56:44

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set in #5820 is correct. Immaculate, bobbym!

#5821. Solve the following system of equations:
35x + 23y = 209,
23x + 35y = 197.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6794 2016-05-05 17:27:29

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6795 2016-05-05 18:04:05

Relentless
Member
Registered: 2015-12-15
Posts: 624

Re: 10 second questions

Hi

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#6796 2016-05-05 18:34:59

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution set #5821 is perfect. Excellent, bobbym and Relentless!

#5822. 3 chairs and 2 tables cost $700; 5 chairs and 3 tables cost $1100. Find the cost of 2 chairs and 2 tables.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6797 2016-05-05 19:05:28

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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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#6798 2016-05-05 23:51:32

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution #5822 is correct. Neat work, bobbym!

#5823. If 2 is added to the numerator of a fraction, it reduces to 1/2 and if 1 is subtracted from the denominator, it reduces to 1/3. Find the fraction.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6799 2016-05-06 03:03:11

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi;


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

#6800 2016-05-06 17:16:11

ganesh
Administrator
Registered: 2005-06-28
Posts: 23,438

Re: 10 second questions

Hi;

The solution #5823 is correct. Neat work, bobbym!

#5824. Solve for

:


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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