Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#5426 2014-11-30 22:38:49
- 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
#5427 2014-12-01 00:12:15
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solution #5286 is correct. Magnificent!
#5287. The image of a tree of a film of a camera is of length 35 millimeters; the distance from the lens to the film is 42 millimeters and the distance from the lens to the tree is 6 meters. How tall is the portion of the tree being photographed?
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.
Offline
#5428 2014-12-01 14:47:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi,
#5288. Find the slope of the straight line which is perpendicular to the straight line joining the points (-2,6) and (4,8).
#5289. Find the angle of inclination of the line joining the two points
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.
Offline
#5429 2014-12-01 17:35:51
- 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
#5430 2014-12-02 00:31:47
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solutions #5288 and #5289 are correct. Neat job!
#5290. If
is added with , find the new expression.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.
Offline
#5431 2014-12-02 02:11:46
- 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
#5432 2014-12-02 03:00:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solution #5290 is correct. Excellent!
#5291. The ratios of respective heights and the respective radii of two cylinders are 1:2 and 2:1 respectively. Then, find the ratio of their respective volumes.
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.
Offline
#5433 2014-12-02 14:43:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi,
#5292. Standard Deviation of a collection of data is
. If each value is multiplied by 3, then what is the Standard Deviation of the new data?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.
Offline
#5434 2014-12-02 23:34:22
- 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
#5435 2014-12-03 00:30:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solution #5292 is correct. Neat job!
#5293. In Δ ABC, DE || BC and
. If AE = 6, find AC.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.
Offline
#5436 2014-12-03 03:21:48
- 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
#5437 2014-12-03 14:22:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
#5294. The radii of two circular ends of a frustum shaped buket are 15 centimeters and 8 centimeters. If its depth is 63 centimeters, find the capacity in liters.
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.
Offline
#5438 2014-12-04 01:05:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi,
#5295. The side BC of an equlateral triangle ABC is parallel to x axis. Find the slope of AB and the slope of BC.
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.
Offline
#5439 2014-12-04 02:11:47
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
#5296. If f(x) = x² + 5, find f(-4).
#5297. Find the slope of the straight line 7y - 2x = 11.
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.
Offline
#5440 2014-12-04 02:15:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
I will need a bit of time with 5294. I am handling an administrative matter.
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
#5441 2014-12-04 02:58:10
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solutions #5295, #5296, and #5297 are correct. Excellent!
#5298. Solve:- x + 2y = 7 and x - 2y = 1.
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.
Offline
#5442 2014-12-04 02:59:08
- 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
#5443 2014-12-04 14:55:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solution #5294 is correct. Fantastic!
#5298. Solve: x + 2y = 7 and x - 2y = 1.
#5299. Find the value of
.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.
Offline
#5444 2014-12-04 21:33:25
- 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
#5445 2014-12-05 00:28:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solutions #5298 and #5299 are correct. Excellent!
#5300. Find the common ratio of the sequence 4, -2, +3, -7, ...
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.
Offline
#5446 2014-12-05 00:44:39
- 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
#5447 2014-12-05 02:36:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The
#5301. If the radius of a sphere is half of the radius of another sphere, then find their ratio of respective volumes.
#5302. For any ollection of n items,
.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.
Offline
#5448 2014-12-05 03:00:10
- 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
#5449 2014-12-05 03:30:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,190
Re: 10 second questions
Hi bobbym,
The solution #5301 is correct. Good worl!
.
#5303. Find the remainder when
is divided by (x - 3).#5304. Find the value of k if the straight lines 3x + 6y + 7 = 0 and 2x + ky = 5 are perpendicular.
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.
Offline
#5450 2014-12-05 04:15:42
- 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.
Offline