Welcome, Guest: Register On Nairaland / LOGIN! / Trending / Recent / New
Stats: 3,158,291 members, 7,836,280 topics. Date: Wednesday, 22 May 2024 at 02:07 AM

Nairaland Math Quiz Winner l::::::JARYEH::::::l - Education (32) - Nairaland

Nairaland Forum / Nairaland / General / Education / Nairaland Math Quiz Winner l::::::JARYEH::::::l (39511 Views)

12 Useful Math Hacks That They Didn't Teach You In School / Nairaland Math Quiz Competition Loading...(suggestions Needed) / 10 Year Old Nigerian Math Genius, Esther Okade Plans To Build A Bank By Age 15 (2) (3) (4)

(1) (2) (3) ... (29) (30) (31) (32) (33) (34) (35) ... (63) (Reply) (Go Down)

Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 4:23pm On Nov 15, 2013
.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by sikells(m): 10:24pm On Nov 15, 2013
Great mathematicians,plz dissolve diz...factorize 6x2+7xy-5y2=0
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 10:36pm On Nov 15, 2013
sikells: Great mathematicians,plz dissolve diz...factorize 6x2+7xy-5y2=0
This is the solution:
6x^2+7xy-5y^2=0
it is like ax^2+bx+c
we would multiply
ac(i.e 6*-5=-30)
6x^2+7xy-30y^2=0
so we would find the two factors of -30 that when we multiply would give us -30 and when we add it,we would get +7(therefore,the two factors will be 10 and -3,if we multiply 10*-3,we have -30, if we add 10+(-3)=7, therefore our two factors is 10 and -3.
6x^2+10xy-3xy-5y^2=0
you will now factorisesadbt pls first arrange accordn 2 lyk terms)
6x^2-3xy+10xy-5y^2
3x(2x-y)+5y(2x-y)
(3x+5y)(2x-y)
i hope it is correct.
thanks for all the corrections my grt bosses and ogas, i have modified it.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Ortarico(m): 10:40am On Nov 16, 2013
aysuccess99:
This is the solution:
6x^2+7xy-5y^2=0
6x^2+7xy-30y^2=0
6x^2+10xy-3xy-5y^2=0
you will now factorisesadbt pls first arrange accordn 2 lyk terms)
6x^2-3xy+10xy-5y^2
3x(2x-y)+5y(2x-y)
(3x+5)(2x-y)
i hope it is correct.

Correct!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Calculusfx: 8:33pm On Nov 16, 2013
Ortarico:

Correct!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Calculusfx: 9:14pm On Nov 16, 2013
Hmmmm
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Calculusfx: 9:14pm On Nov 16, 2013
I guess no master professor ortarico
Ortarico:

Correct!
how did you turn 5 to 30 and where is the y with 5(you have slaughtered it)
aysuccess99:
This is the solution:
6x^2+7xy-5y^2=0
6x^2+7xy-30y^2=0
6x^2+10xy-3xy-5y^2=0
you will now factorisesadbt pls first arrange accordn 2 lyk terms)
6x^2-3xy+10xy-5y^2
3x(2x-y)+5y(2x-y)
(3x+5)(2x-y)
i hope it is correct.
,i think this is a way of doing it,from the question 6x^2+7xy-5,comparing it with general quadratic formula,ax^2+bx+c and since a is not equal to 1,then you multiply a by c(6*-5=-30),then find 2 numbers you will multiply that will give you -30 and added to give +7...let's do it like this...you know + * -=- and - * +=-,i could remember secondary school life that when it resembles,it's + and when it doesn't resemble it's - that's the reason why +*+=+ and -*-=+,so let's continue...then you find the factors of 30 you know,but don't forget it's -30 ooo,and +*- or -*+ can work for it...the factors are 1 and 30,2 and 15,3 and 10.i think that's all,no,we still have 5 and 6...so checking those those factors,which one can be subtracted or added to give 7,can you guess?no no no,it's 3 and 10 and we are using + and - or - and +...then we use both [+3 and -10=-7...-3 and +10=+7(on addition)]...and we need +7 so we take what?Good, -3 and +10...let's pause for now and let me take a bottle of water....
....so,we have had enough rest,let's continue,then we substitute it to where we see +7 from 6x^2+7xy-5y^2,then 6x^2-3xy+10xy-5y^2...from the first two factorize 3x to give 3x(2x-y)+5y(2x-y),since 2x-y is common to both,factorize to give (2x-y)(3x+5y)...hope you understand?
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Aibike(m): 7:19am On Nov 17, 2013
aysuccess99:
This is the solution:
6x^2+7xy-5y^2=0
6x^2+7xy-30y^2=0
6x^2+10xy-3xy-5y^2=0
you will now factorisesadbt pls first arrange accordn 2 lyk terms)
6x^2-3xy+10xy-5y^2
3x(2x-y)+5y(2x-y)
(3x+5)(2x-y)
i hope it is correct.
..u are correct sire, buh arrangemnt wasnt properly made,dereby afectin d dlast ans... ,...6x2+7xy-5y2=0
6x2+10xy-3xy-5y2=0
(6x2+10xy)-(3xy+5y2)=0
2x(3x+5y)-y(3x+5y)
(2x-y)(3x+5y) thnx
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 7:43am On Nov 17, 2013
Cool n' straight 4ward, bravo!
Ai-bi-ke:
..u are correct sire, buh arrangemnt wasnt properly made,dereby afectin d dlast ans... ,...6x2+7xy-5y2=0
6x2+10xy-3xy-5y2=0
(6x2+10xy)-(3xy+5y2)=0
2x(3x+5y)-y(3x+5y)
(2x-y)(3x+5y) thnx
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Aibike(m): 10:48am On Nov 17, 2013
factorial1: Cool n' straight 4ward, bravo!
bravo ke!...all respect to God and to you d babas in d gurus lodge......

1 Like

Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Calculusfx: 12:10pm On Nov 17, 2013
factorial1: Cool n' straight 4ward, bravo!
laughs,i know little things about logic bro,thanx

1 Like

Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Maths125(m): 1:30pm On Nov 17, 2013
AM INTRESTED
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Maths125(m): 1:44pm On Nov 17, 2013
[quote author=Calculusf(x)]I guess no master professor ortaricohow did you turn 5 to 30 and where is the y with 5(you have slaughtered it),i think this is a way of doing it,from the question 6x^2+7xy-5,comparing it with general quadratic formula,ax^2+bx+c and since a is not equal to 1,then you multiply a by c(6*-5=-30),then find 2 numbers you will multiply that will give you -30 and added to give +7...let's do it like this...you know + * -=- and - * +=-,i could remember secondary school life that when it resembles,it's + and when it doesn't resemble it's - that's the reason why +*+=+ and -*-=+,so let's continue...then you find the factors of 30 you know,but don't forget it's -30 ooo,and +*- or -*+ can work for it...the factors are 1 and 30,2 and 15,3 and 10.i think that's all,no,we still have 5 and 6...so checking those those factors,which one can be subtracted or added to give 7,can you guess?no no no,it's 3 and 10 and we are using + and - or - and +...then we use both [+3 and -10=-7...-3 and +10=+7(on addit. Both of u id the same thing. The get the workings but make simple mistake. In the answer
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by busuyem: 8:39pm On Nov 17, 2013
Find solution to this while waiting 4 the competition to continue 2mao:


Out of 200 in a sec sch,50 Yam had for launch ,out of the rest,6 ate Dodo and Rice only,22 took Beans only,3 ate Beans,Rice and Dodo,5 ate beans and Rice and 7 ate beans and Dodo as their food or part of their food. If d numb of students who took only Dodo is equal to that who took only Rice.find d total of those who took (i) rice as food or part of their food. (ii)Dodo as food or part of their food.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by echibuzor: 8:39am On Nov 18, 2013
busuyem: Find solution to this while waiting 4 the competition to continue 2mao:


Out of 200 in a sec sch,50 had for launch ,out of the rest,6 ate Dodo and Rice only,22 took Beans only,3 ate Beans,Rice and Dodo,5 ate beans and Rice and 7 ate beans and Dodo as their food or part of their food. If d numb of students who took only Dodo is equal to that who took only Rice.find d total of those who took (i) rice as food or part of their food. (ii)Dodo as food or part of their food.
.
(1) Rice as food = 16
(2) Dodo as food = 18
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by AmazingAngel(f): 8:56am On Nov 18, 2013
Quiz masters,pls u guys shld do evrytin fast fast today o,considering d fact dat we will be answering 10questions today cos I ave to be in church by 5pm o
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by busuyem: 9:03am On Nov 18, 2013
echibuzor:
.
(1) Rice as food = 16
(2) Dodo as food = 18

Pls, could u show me the workings?
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by echibuzor: 9:27am On Nov 18, 2013
busuyem:

Pls, could u show me the workings?
.
The set of people we are concerned with are the Lunchers => U = 50
D for Dodo grin R for Rice and B for Beans

D & R only = 6
B only = 22
B, R & D = 3
B & R only = 5
B & D only = 7 - 3 = 4 (i.e minus those that ate the Holy Trinity grin grin )
D only = R only = x

50 = x + 6 + x + 4 + 5 + 22 + 3
x = 5

(1) Those who Rice anyhow = 5 + 6 + 3 + 5 = 19 students (As you must have noticed, this answer is diff from my initial post shocked Too much AKPU dey worry eye, This one is correct though, as far as I can see )
(2) Dodo People = 5 + 6 + 3 + 4 = 18 students.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Mbahchiboy(m): 9:39am On Nov 18, 2013
GUESS I AM TOO LATE TO B A PARTAKER
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by akpos4uall(m): 9:45am On Nov 18, 2013
echibuzor:
.
The set of people we are concerned with are the Lunchers => U = 50
D for Dodo grin R for Rice and B for Beans

D & R only = 6

B, R & D = 3
B & R only = 5
B & D only = 7 - 3 = 4 (i.e minus those that ate the Holy Trinity grin grin )
D only = R only = x

You should have done the D & R only and B & R only the same way you solved B & D only.
I.e D & R = 6 - 3 = 3
B & R = 5 - 3 = 2

With that, your answer will be the same as the first answer you posted.
echibuzor:
.
(1) Rice as food = 16
(2) Dodo as food = 18
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by echibuzor: 9:45am On Nov 18, 2013
Mbahchiboy: PLZ I'M I TOO LATE TO B A PARTAKER?
It is late boss, The Quiz has entered 4th Round or so... Next Episode though, keep it locked down....
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by echibuzor: 10:32am On Nov 18, 2013
akpos4uall: I just modified my previous post. Check it for the correction.
6 ate Dodo and Rice
6 only
22 took Beans only
22 only
3 ate Beans,Rice and Dodo
Intersection = 3
5 ate beans and Rice,
its beans and rice only (its a bit of word play on the part of the examiner, I could be wrong though, But I dont think so..) 7 ate beans and Dodo as their food or part of their food[/b] . If d numb of students who took only Dodo is equal to that who took only Rice.find d total of those who took (i) rice as food or part of their food. (ii)Dodo as food or part of their food.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 10:41am On Nov 18, 2013
Morning bosses and bossresses....how was ur nyt? Please richiez, what's the time the quiz gonna commece 2day? It'l really be appeciated if we can start by evening! #cheers
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 10:51am On Nov 18, 2013
Good morning everyone and welcome to yet another exciting round of The Nairaland Math Quiz Competition. This is :::ROUND 4:::
here is a breakdown of statistics from the last 3 rounds
loading......
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by denniece1(m): 11:03am On Nov 18, 2013
Mehn...had to save my ba3..abeg come and start oo...gudday 2 everyone
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 11:07am On Nov 18, 2013
1. :::JARYEH::: 12pts

2. :::DENNIECE1::: 14pts

3. :::IDENYIJOSHUA::: 12pts

4. :::DR.GBOY::: 14pts

5. :::FACTORIAL1::: 14pts

6. :::AYSUCCESS99::: 12pts

7. :::KENDZYMA::: 12pts

8. :::LOGODWHIZ::: 10pts

9. [url=https://www.nairaland.com/amazing%20angel]:::AMAZING ANGEL:::[/url] 10pts

10. :::SMURFY::: 14pts
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by jaryeh(m): 11:13am On Nov 18, 2013
Good morning everyone.

Quiz masters,let's set the ball rolling abeg!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by AmazingAngel(f): 11:15am On Nov 18, 2013
Wen will we start Ω̴̩̩̩̥α ,dis one am refreshing the page evry 2mins
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 11:17am On Nov 18, 2013
good mawning all my bosses and ogas.before we start let us pray o: Father In Jesus Name, Our Most High God we bless and worship your name because you are God. As we want to begin, start with us, give the contestants wisdom, knowledge and understanding.Ijn.

(1) (2) (3) ... (29) (30) (31) (32) (33) (34) (35) ... (63) (Reply)

Which University Is The Best In Nigeria? / Free Food Leads To School Stampedes In Kaduna (photos) / FG Reverses JAMB's Policies On Admission!!!

(Go Up)

Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health
religion celebs tv-movies music-radio literature webmasters programming techmarket

Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 43
Disclaimer: Every Nairaland member is solely responsible for anything that he/she posts or uploads on Nairaland.