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#1426 2010-05-17 02:23:30
- soha
- Real Member
- Registered: 2006-07-07
- Posts: 2,530
Re: 10 second questions
Last edited by soha (2010-05-17 02:24:36)
"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!" 
- David O. McKay
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#1427 2010-05-17 02:38:51
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1428 2010-05-18 00:59:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi soha and bobbym,
Correct solutions to #2127 and #2128.
Very good.
#2129. cos(A+B) =?
#2130. cos(A-B) =?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1429 2010-05-18 02:05:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1430 2010-05-19 02:07:19
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
The solution to #2129. is cosAcosB-sinAsinB.
Please check your reply.
#2131. tan(A+B)=?
#2132. tan(A-B)=?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1431 2010-05-19 05:20:06
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
You are correct. I am trying to do these just from memory so I will be making some mistakes. Thanks for pointing that out. Keep posting the problems!
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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#1432 2010-05-20 01:21:03
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
tan(A+B) = tanA+tanB/1-tanAtanB.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1433 2010-05-20 01:47:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
#2133. Find the length of the train when a pole passes the train at 36kmph in 100 minutes.
#2134. What is the approximate mass of planet Earth?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1434 2010-05-20 10:05:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1435 2010-05-21 01:04:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi,
Outstanding!
#2135. The sum of two numbers is 59 and their product is 864. Find their numbers.
#2136. The sum of two numbers is 59 and their product is 714. Find their numbers.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1436 2010-05-21 01:10:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1437 2010-05-22 00:58:00
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
Your performance is outstanding.
#2137.The object and image lengths are 12 and 18 centimeters. Find the focal length.
#2138.Find the effective resistance of resistors in 12, 15 and 20 ohms in parallel.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1438 2010-05-22 01:01:22
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: 10 second questions
Last edited by ZHero (2010-05-22 01:01:40)
If two or more thoughts intersect, there has to be a point!
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#1439 2010-05-22 01:29:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
Your performance is outstanding.
Thank you so much. But what about my math?
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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#1440 2010-05-23 01:17:07
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
Very good!
(Its not clear in ZHero's solution).
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1441 2010-05-23 01:39:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
#2139. Find the area of the triangle of the right triangle with hypotenuse 13 units.
#2140. Find the area of equilateral triangle of sides 7 units.
#2141. Find the area of the equilateral triangle of sides 14 units.
#2142. Find the triangle of area having sides of 6,7 and 8 units.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1442 2010-05-23 12:23:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1443 2010-05-27 01:06:30
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
The reply to 2140 is correct!
#2143. Find the value of 2^(1+2+3+4+5).
#2144. Find the area of a triangle of sides 3,4, and 5 units.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1444 2010-05-27 01:09:57
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1445 2010-05-27 01:56:13
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
The solutions to #2143 and #2144 are correct. Good work!
#2145. What is log[sub]10[/sub]75?
#2146. What is log[sub]10[/sub]48?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1446 2010-05-27 03:19:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
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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#1447 2010-05-28 01:18:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
Marvelous work for #2145 and #2146.
#2147. If the simple interest rate at 10% per year is $5,000, Principal is $50,000, find the number of year/years.
#2148. Find the compound interest given the principal $10,000, for a period of 2 years, at the rate of 20% compounded yearly.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1448 2010-05-28 01:52:15
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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#1449 2010-05-29 01:21:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: 10 second questions
Hi bobbym,
You are correct to 2147 and 2148.
Remarkable!
#2149. What is the length of the shortest diagonal of the cuboid of the length, breadth, and height units of 3, 4, and 5 units?
#2150. What is the shortest diagonal of the cube of side length 6 units?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1450 2010-05-29 01:53:36
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
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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