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Nairaland Forum / Nairaland / General / Education / Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] (39500 Views)
2016 NAIRALAND JAMB TUTORIAL {the Physics Thread } / Nairaland 2016 Jamb Tutorial Classroon [use Of English Thread] / Nairaland 2016 Jamb Tutorial Classroom [chemistry Thread] (2) (3) (4)
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Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Affable0709(m): 5:16pm On Sep 07, 2015 |
Umartins1: Evening sir, I have some questions from my friend's aptitude test. Solve for x of equation 4^2x =2^6x-1 I still have enough questions left unanswered. Just request. |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 5:43pm On Sep 07, 2015 |
THE MIDPOINT THEOREM.. The formula used for calculating the coordinates of the midpoint of a straight line are: x1 + x2/2, y1 + y2/2 example: find the coordinates of the midpoint of the line joining (3, -4) and (-1, 10) solution: using the formula provided above, x1= 3 x2= -1 y1= -4 y2= 10 now, lets solve 1st for the coordinates of the midpoint of the x-axis: using the formula: x1 + x2/2 3 +(-1)/2 3 - 1/2 2/2 x=1 therefore, the coordinate of the midpoint of the x-axis is 1 now, lets solve for y: y1 + y2/2 -4 + 10/2 6/2 y=3 therefore, the coordinates of the midpoint of y-axis is 3. therefore, we're going to bring the two answers together according to the form (x, y). therefore, the final answer will now be: (1, 3) 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Umartins1(m): 5:47pm On Sep 07, 2015 |
Affable0709: 42x = 26x-1 22(2x) = 26x-1 24x = 26x-1 4x= 6x-1 4x-6x= -1 -2x= -1 x= 1/2. 3 Likes 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Geofavor(m): 5:50pm On Sep 07, 2015 |
Affable0709:42x = 26x-1 22(2x) = 26x-1 2(2x) = 6x - 1 4x = 6x - 1 1 = 6x - 4x 1 = 2x 1/2 = x X = 1/2 = 0.5 2 Likes 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 5:53pm On Sep 07, 2015 |
Geofavor:nice one 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 5:54pm On Sep 07, 2015 |
Umartins1:GRREEEEAAATT! 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Affable0709(m): 7:50pm On Sep 07, 2015 |
Umartins1, Geofavor, Orezy5.
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Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 8:03pm On Sep 07, 2015 |
Affable0709, can u pls type out d questions. i dnt have a big screen. thanks. |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Affable0709(m): 9:13pm On Sep 07, 2015 |
Simplify log 45-log 9/2 |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Geofavor(m): 9:42pm On Sep 07, 2015 |
Affable0709:Log45 - (log9 - log2) Log9 × 5 - (log9 - log2) (Log9 + log5) - (log9 - log2) Log9 + log5 - log9 + log2 Log5 + log2 Log5 × 2 Log10 Log10 = 1 A. 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Jamb2016Expo: 11:17pm On Sep 07, 2015 |
2+2=22 |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Jamb2016Expo: 11:20pm On Sep 07, 2015 |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 8:20am On Sep 08, 2015 |
Affable0709:log45 - log 9/2 log(45 divided by 9/2) log(45 * 2/9) log(90/9) log 10= 1 3 Likes 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Umartins1(m): 8:22am On Sep 08, 2015 |
41. Solve for x if 42x = 26x-1 Solution 24x = 26x-1 4x= 6x-1 4x-6x= -1 -2x= -1 x= 1/2...... B 42. Simplify Log45-log 9/2 Solution Log(90/2) - Log(9/2) Log(90/2 / 9/2) Log (90/2 X 2/9) Log 10 = 1. ........... A 43. Find the HCF of: a3x2y2 = a*a*a*x*x*y*y b3xy2= b*b*b*x*y*y C3x2y= c*c*c*x*x*y Common factor= x*y HCF= xy........... C 44. Evaluate.... I think you should write the fractions out. I aint getting them. 45. If 12:22=n:1, find n Solution 12/22 = n/1 22n= 12 n=12/22 n= 0.545.......... B 46. If #738 is divided in the ratio 3/2, 2, 10/3...... Solution. Sharing ratio= 3/2 + 2 + 10/3 (9+12+20) / 6 41/6 Each share= #738 divided by 41/6 = #738 X 6/41 = #108 The share for 2 is #108 X 2 = #216........ B 47. %error= actual length-error / actual length. X 100 Let error =x (25-x)/25 X 100= 4 (2500-100x) / 25 =4 2500-100x= 25X4 2500-100x=100 -100x= 100-2500 -100x= -2400 x= 24 The measurement is wrong by, 25m-24m = 1m......... A 2 Likes 2 Shares |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 8:23am On Sep 08, 2015 |
gud morning guys |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by HomoSapiien: 8:33am On Sep 08, 2015 |
Orezy5:Good morning sir 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Umartins1(m): 8:46am On Sep 08, 2015 |
48. axy + bcxy - az - bcz xy(a+bc)-z(a+bc) (Xy-z)(a+bc) (A+bc)......... B 49. 5x-y varies as 10x-11y 5x-y=k(10x-11y) K= 5x-y / 10x-11y When x=7 and y=5 K= 5(7)-5 / 10(7)-11(5) K= 35-5 / 70-55 K= 30 / 15 K= 2 Sub for k in 5x-y=K(10x-11y) 5x-y=2(10x-11y) 5x-y= 20x-22y -y+22y= 20x-5x 21y= 15x Y= 15x/21 Y= 5x/7 50. I can't view it very well. Type it. 51. I don't know biz maths. 52. Gradient= y2-y1 / x2-x1 5-0 / 7-2 5/5 1............ A 53. X+y+z=27 7-5+z=27 2+z=27 Z= 27-2 Z= 25........... B Cc: Affable0709 3 Likes 2 Shares |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by HomoSapiien: 8:50am On Sep 08, 2015 |
1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 9:03am On Sep 08, 2015 |
THE DISTANCE BETWEEN TWO POINTS for a system of two points, i.e (x1, y1) and (x2, y2); the formula for calculating the distance between two points is: d=[square root](x2 - x1)2 + (y2 - y1)2[/square root] example one: what is the distance between the points (3, -2) and (8, 10)? solution using the formula given above, x1= 3, y1= -2, x2= 8, y2= 10 d=[square root](8 -3)2 + (10 -(-2)2[/square root] d=[square root](5)2 + (10 + 2)2[/square root] d=[square root](5)2 + (12)2[/square root] d=[square root]25 + 144[/square root] d=[square root]169[/square root] d=13units. therefore, the distance between the two points is 13units. 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Umartins1(m): 9:07am On Sep 08, 2015 |
My batt is low, I'm gonna upload the rest later 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 12:51pm On Sep 08, 2015 |
example two: the distance between the points (x, 3) and (-x, 2) is 5. find x. solution. although we're going to use the same formula just like the first example, notice that this example is slightly different from the 1st one, the only difference is that we've been given the value of the distance and we're only asked to find the value of one of the coordinates.. it sounds funny abi? let's solve! since d=square root(x2 - x1)2 + (y2 - y1)2. let's bring out all our values: x1= x y1= 3 x2= -x y2= 2 d= 5units. 5=sqrt(x - (-x)2 + (2 - 3)2 5=sqrt(x + x)2 + (-1)2 5=sqrt(2x)2 + 1 5=sqrt 4x2 + 1 the square root crosses the = sign to 'marry' 5 and it becomes 52 52= 4x2 + 1 25= 4x2 + 1 collect like terms: 4x2= 25 - 1 4x2= 24 divide both sides by 4: 4x2/4= 24/4 x2= 6 now the square sign 'divorces' x and marries 6: NB: WHEN THE SQUARE ROOT SIGN CROSSES = SIGN, IT BECOMES THE SQUARED SIGN AND VICE-VERSA x= sqrt 6 x= 2.449units NB: sqrt means square root 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by markpeakson(m): 12:45pm On Sep 09, 2015 |
Orezy5:5=sqrt(-2x) 2 + (-1) 2 5=√4x + 1 not √4x 2 + 1 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 2:22pm On Sep 09, 2015 |
markpeakson:u r wrong. how did u get 4x when the squared sign would also affect x? (-2x)2simply means: (-2)2 * (x)2 =4x2 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by markpeakson(m): 2:54pm On Sep 09, 2015 |
Orezy5:you are absolutely right... am sorry |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by markpeakson(m): 2:54pm On Sep 09, 2015 |
Orezy5:you are absolutely right... am sorry 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 3:53pm On Sep 09, 2015 |
markpeakson:its alryt. we're all learning 1 Like 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by cee001(m): 7:01pm On Sep 09, 2015 |
U all are doing a great job. I'll b lending and learning here...#following 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 7:40pm On Sep 09, 2015 |
cee001:u r welcm 2 Likes |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Francis95(m): 8:54pm On Sep 09, 2015 |
Orezy5:Orezy.. I need your Whatsapp number.. Am interested in what you guys are doing here.. 1 Like |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Francis95(m): 10:52pm On Sep 09, 2015 |
Am following ooooo..... 2 Likes 1 Share |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 5:14am On Sep 10, 2015 |
Francis95:i'm nt on whatsapp. the type of phone i'm using dnt support it. But u can still have my number: 08175863538 2 Likes |
Re: Nairaland 2016 Jamb Tutorial Classroon [mathematics Thread] by Orezy5(m): 5:15am On Sep 10, 2015 |
Francis95:i'm nt on whatsapp. the type of phone i'm using dnt support it. But u can still have my number: 08175863538. |
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