@horpeyemmi66, please do you use an android? If yes, which keyboard do you use that contains all these symbols?

arrrgh...i ws so close l2-30=54 so t'ws 30-54...my mistake

mathefaro:
@horpeyemmi66, please do you use an android? If yes, which keyboard do you use that contains all these symbols?

It's copy and paste job jare, all thanks to Google and Webcrawler!

ask anoda questn pls@horpe...i'l be reserved at dose ?s

OGOJNR:
arrrgh...i ws so close
l2-30=54 so t'ws 30-54...my mistake

I give you an 89%, I saw your work and smiled...saying 'Almost' undeneath a wide grin .

OGOJNR:
ask anoda questn pls@horpe...i'l be reserved at dose ?s

How many theories make up the modern view of heat?

bt u didnt tell me,sir...anyways i want anoda,sir

1st and 2nd laws of thermodynamics,i tink

1. All hands up to the bosses in the building.
giving my respect
2. Still remain my loyal self.
Holarmancy
3. " Even the bitterleaf is said to be health worthy "
watsapp group hasn't been serving its purpose efficiently to be truthful Bh i think even with all its dark sides its one beautiful portal for sending rapid info- rmation both senseless and sensible ones but as intellects which i think we are we should be able to filter the "sense " in the . "senseless ". In addition i think the watsapp group has been able to dish out more questions than this forum (my observation tho.no offence) My point: lets learn to appropriate the better side of things....
4. Hmmm . "Be realistic: PRAY for a miracle"

OGOJNR:
bt u didnt tell me,sir...anyways i want anoda,sir

OGOJNR:
1st and 2nd laws of thermodynamics,i tink

Do you know there is a Zeroth law?

The answer is Caloric Theory and Motion Theory...baba, I wanna go grab a bite.

datz a'level nw

mention a vertebrate that lays egg...den we wil continue when?

OGOJNR:
mention a vertebrate that lays egg...den we wil continue when?

Monotremes I guess...Duck billed platypus

yh,what is prickling and name a substance used for it

OGOJNR:
yh,what is prickling and name a substance used for it

I guess you meant Pickle as in to Pickle Vegetable, if its Prick you mean then there are pins: Safety, Staple and Office....

Really tell me what it is.

OGOJNR:
mention a vertebrate that lays egg...den we wil continue when?

I think it should be mammals not vetebrates

OGOJNR:
yh,what is prickling and name a substance used for it

removal of oxides prior to electroplating/electrolysis
using HCL.

thaotech:


I think it should be mammals not vetebrates

At least you got the gist of his question...

i must say dis,u r gud...nw i tink i've got ur weak points...we shal mit 2mao cos i wana watch a match ryt nw...gud 9te pals

horpeyemmi66:

It's copy and paste job jare, all thanks to Google and Webcrawler!

ok

45cm^3 of a mixture of carbon( II ) and carbon ( IV ) oxide were mixed with 45cm^3 of oxygen,and exploded.The volume of the resulting gas,measured at the same temperature and pressure,was 70cm^3.Calculate the volume of the carbon monoxide in the original mixture?

Let's go easy with cheap math questions as we go to bed.

1. 2 dice are thrown together. What's the probability of getting a sum of 5?

2. The sum of an infinite geometric progression is 16/7 and the first term is 4. What's the common ratio?

3. A man is x years old while his son is you years old. The sum of their ages is twice the difference of their ages. If the product of their ages is 675. Find the age of the man

4. The line y = kx - 3 is perpendicular to the line 2y + 3x = 7. What's the value of k?

5. In how many ways can 9 people be seated if 3 chairs are available?

6. The third term of an A.P is 4x - 2y and the ninth term is 10x - 8y. Find the common difference

7. If the mean of the numbers a, b, c, D and e is x. What's the mean of the numbers a + k, b + 2k, c - k, d - 2k and e?

8. Make x the subject of the relation y = 3 - lnx

9. An equilateral triangle of side 2cm is inscribed in a circle. Find the area of the circle in terms of π.

10. The chord PQ of a circle is equal to the radius r of the circle. Find the length of the arc PQ in terms of r and π.

NB: These are excerpts from questions treated on whatsapp.
Good night folks

OGOJNR:
finally,i got u...that questn dnt nid any calculation since u're lukin for d acceleration before cumin to rest...wen a body undergoes uniform velocity or constant speed the acceleration is always zero...the ans is 0

If a body moves with a constant speed and at the same time undergoes an acceleration, What can you say about that ?

enry54:
If a body moves with a constant speed and at the same time undergoes an acceleration, What can you say about that ?

Not possible! For the fact that it's moving with a constant speed means it's speed is neither increasing nor decreasing. Hence no change in speed and acceleration us zero

Postgraduate School University of Ibadan starts Sales of Form for 2015/16
Sale of Forms for the 2015/16 Academic Session starts at The Postgraduate School, UI


UNIVERSITY OF IBADAN, IBADAN, NIGERIA
THE POSTGRADUATE SCHOOL


Hello,

Sale of forms for the 2015/16 Academic Session Admission Exercise shall commence on Monday, June 8th, 2015 and would last for six (6) weeks.

All interested candidates are therefore advised to apply through our admissions portal :

http://admissions.pgschool.ui.edu.ng/adm_all_main.aspx

All applicants are to apply through this admissions portal ALONE.

BEWARE of FRAUDULENT people. The Postgraduate School, University of Ibadan, has NO authorized AGENT anywhere

Kindly inform your friends, and other individuals who may be interested.


Thank you

Management
Postgraduate School, UI

mathefaro:
Not possible! For the fact that it's moving with a constant speed means it's speed is neither increasing nor decreasing. Hence no change in speed and acceleration us zero

What about the case of circular motion?

Really Impressed.

You guys re just too perfect.

intruder though Rep Beta by Far, Mathematics.

ln(y^-1) = x




differentiate Y with respect to X.




Good morning gurus.

mathefaro

1. 2 dice are thrown together. What's the probability of getting a sum of 5?

1/9

2. The sum of an infinite geometric progression is 16/7 and the first term is 4. What's the common ratio?

sum to infinity = a/ 1-r
16/7 = 4/ 1-r
16-16r= 28
-16r= 28-16
-16r= 12
r= -12/16
r= -3/4

3. A man is x years old while his son is you years old. The sum of their ages is twice the difference of their ages. If the product of their ages is 675. Find the age of the man

x+y= 2(x-y)..... 1
xy=675........ 2

x+y= 2x-2y
x-2x=-2y-y
-x=-3y
x=3y........ (3)
xy=675...... (2)

Sub for x in eqn (2)
3y(y)= 675
3y²= 675
y²= 225
y²= 15²
y= 15

Sub for y in eqn (3)
15x=675
x= 675/15
x= 45

The father's age= 45years.

4. The line y = kx - 3 is perpendicular to the line 2y + 3x = 7. What's the value of k?

m₁= k

2y+3x=7
2y=7-3x
y= 7/2 - 3/2 x

M₂ = -3/2

When it is perpendicular,
M₁M₂ =-1
k * -3/2 = -1
-3k/2 = -1
-3k= -2
k= -2/-3
k= 2/3

5. In how many ways can 9 people be seated if 3 chairs are available?

9P₃
9!/ (9-3)!
9!/6!
9*8*7
504ways

6. The third term of an A.P is 4x - 2y and the ninth term is 10x - 8y. Find the common difference

a+2d= 4x-2y....... (1)
a+8d= 10x-8y...... (2)

Eqn (2)-(1)

6d= 6x-6y
6d= 6 (x-y)
d=x-y

7. If the mean of the numbers a, b, c, D and e is x. What's the mean of the numbers a + k, b + 2k, c - k, d - 2k and e?

from the 1st statement,
(a+b+c+d+e) / 5 = x
a+b+c+d+e= 5x.

From the 2nd statement,

(a+k+b+2k+c-k+d-2k+e)/ 5

(a+b+c+d+e+k+2k-2k) / 5

Since, a+b+c+d+e= 5x
(5x+k+2k-2k)/5
5x/5
=x

8. Make x the subject of the relation y = 3 - lnx

x= anti-log (3-y)

9. An equilateral triangle of side 2cm is inscribed in a circle. Find the area of the circle

A= pi r²
22/7 * 2²
22/7*4
88/7 cm²

10. The chord PQ of a circle is equal to the radius r of the circle. Find the length of the arc PQ in terms of r and π.

60/360 * 2pi r
1/6 * 2pi r
Pi r/3 cm.

Umartins can you show workings on clear explanation for that number1

Umartins1:
mathefaro



1/9



sum to infinity = a/ 1-r
16/7 = 4/ 1-r
16-16r= 28
-16r= 28-16
-16r= 12
r= -12/16
r= -3/4



x+y= 2(x-y)..... 1
xy=675........ 2

x+y= 2x-2y
x-2x=-2y-y
-x=-3y
x=3y........ (3)
xy=675...... (2)

Sub for x in eqn (2)
3y(y)= 675
3y²= 675
y²= 225
y²= 15²
y= 15

Sub for y in eqn (3)
15x=675
x= 675/15
x= 45

The father's age= 45years.




m₁= k

2y+3x=7
2y=7-3x
y= 7/2 - 3/2 x

M₂ = -3/2

When it is perpendicular,
M₁M₂ =-1
k * -3/2 = -1
-3k/2 = -1
-3k= -2
k= -2/-3
k= 2/3



9P₃
9!/ (9-3)!
9!/6!
9*8*7
504ways



a+2d= 4x-2y....... (1)
a+8d= 10x-8y...... (2)

Eqn (2)-(1)

6d= 6x-6y
6d= 6 (x-y)
d=x-y



from the 1st statement,
(a+b+c+d+e) / 5 = x
a+b+c+d+e= 5x.

From the 2nd statement,

(a+k+b+2k+c-k+d-2k+e)/ 5

(a+b+c+d+e+k+2k-2k) / 5

Since, a+b+c+d+e= 5x
(5x+k+2k-2k)/5
5x/5
=x




x= anti-log (3-y)




A= pi r²
22/7 * 2²
22/7*4
88/7 cm²




60/360 * 2pi r
1/6 * 2pi r
Pi r/3 cm.

you aced 8 of them