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Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 4:23pm On Nov 15, 2013 |
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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=0This 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 factorisebt 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: Correct! |
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Calculusfx: 8:33pm On Nov 16, 2013 |
Ortarico: |
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:how did you turn 5 to 30 and where is the y with 5(you have slaughtered it) aysuccess99:,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:..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: |
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:. (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: Pls, could u show me the workings? |
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by echibuzor: 9:27am On Nov 18, 2013 |
busuyem:. The set of people we are concerned with are the Lunchers => U = 50 D for Dodo 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 ) 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 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: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: |
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 Rice6 only 22 took Beans only22 only 3 ate Beans,Rice and DodoIntersection = 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. |
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