...

RobinHez:
u've been ghost reading ba? how are u sha?

yeah...
I'm fine..you?

RobinHez:
when repaying a loan, the number of monthly payment, m varies inversely with the amount of each payment #A. if the loan can be repaid by 10 monthly payment of #1,350. find how long it takes to repay the loan with monthly payment of #750
dharay99 , ada96 , nd You!

18months.

RobinHez:
Joseph bought an article for #500,000 and sold it to Okoro at a loss of x% Okoro later sold the article to Godwin at a profit of 40% If Okoro made a profit of #10,000 find the value of x.
A. 60
B. 50
C. 40
D. 20
dharay99, Ada96

C. 40

RobinHez:
medwhite0 whatsup man?

big bro.

long time.

...

horpeyemmi66:
@Horlarmancy, you see, you guys have to take things lightly...either of you should have probed to know who the man behind the Mask was. But you were blinded by seemingly irrelevant things like words...
-------------------------------------------------------

*BIOLOGY| NUTRITION 002

1. Which of the following converts Pepsinogen to pepsin?

A. Renin

B. HCl

C. Amylopsin

D. Insulin

2. Which of the following Animals has no gall bladder

A. Rattus rattus

B. Homo sapiens

C. Tilapia zilli

D. Bufo regularis

3. They Cardiac and Pyloric sphincters are found in what Organ?

A. Gall bladder

B. Pancreas

C. Spleen

D. Stomach

4. The Caecum and Appendix have become Vestigial organs in humans due to which of the following?

A. Size to mass ratio

B. Inability to digest Cellulose

C. Evolution

D. A and C

5. Zynogens are what?

A. Epithelial linings

B. Co-enzyme Activators

C. Co-enzyme inhibitors

D. Liquid poisons

6. Insulin and Glucagon are enzymes found in what Organ?

A. Stomach

B. Bladder

C. Pancreas

D. Spleen

7. The formation of Urea occurs where?

A. Bladder

B. Liver

C. Spleen

D. Kidney

8. Foetal red blood cells are produced where?

A. Liver

B. Bone marrow

C. Coronary arteries

D. Chorion

9. The Dental formula of a Dog is which?

A. I 2/2 C 3/4 Pm 4/4 M 3/2

B. I 3/3 C 1/1 Pm 4/4 M2/3

C. I 0/2 C0/1 Pm 4/4 M 2/3

D. I 0/3 C 0/1 Pm 3/3 M 3/3

10. The true stomach of a bird is otherwise known as what?

A. Proventriculus

B. Reticulum

C. Caecum

D. Gizzard.

Good Morning, and its a beautiful day, today in Nigeria.

Cc Mikechibuzor....Sir.Mike!,
AleXis0r.....U ehn!,
DrHost...U ehn!, jacking mode?
Bhuumhite...where art thou?,
thaotech....Dr. Sir,
Francistony...we have missed you mischief,
PrOton.................Baba Isale of Group,
Dr.Sage....Now two Dr.s,
Professorbea...what Course ma?,
Pes13....A man of 9lives,
Whales2020....now you've jilted NL?,
Estijaz.................missed you Sis,
Ogunsinamayowa....Laughter is the best Medicine,
Polymath....................FIGHTING!,
Cassyrooy....Dike!,
UMartins1 I don't like you,
Medwhite...you have an attitude,
Horlarmancy...Forget the fracas baba, he never knew...
FunkySilver....where art thou?, et al

1B
2A
3D
4B
5B
6C
7B
8A
9B
10A

...

RobinHez:
i don't know

Heat lost(supplied) = heat gained by ice + heat gained by container


Heat gained by ice = ml (change in state) + mc@(change in temperature)

Heat gained by container= H@

H=ML+MC@ +H@ m=10g=0.01kg.

6000=333000*0.01 + 0.01*4200*@ +20@
6000 = 3330 + 42@ + 20@
6000-3330=62@
@= 2670/62

@=43.06

6000J of heat Is delivered to 10g of dry ice at 0°C. What is the final temperature if the container has a heat capacity of 20J/K?
c of water = 4200J/kg/K, latent heat of fusion of ice = 3.33 x 10^5J/kg.

Princecalm:
nearly!, this is to show how a mathematical sign is important in a calculation., cross-check your workings and you will realise your gradient(m) ought to be -4, but you used 4 for the calculations and it led you elsewhere.

yeah....check my working again....modified #

Princecalm:
[center] find the value of p, if the line which passes through (-1, -p) and (-2p,2) is parallel to the line 2y+8x-17=0. [/center]

Y=MX+C
M=slope.
2Y=-8x+17
m=-8/2=-4
y2-y1/x2-x1=M

(2--p)/(-2p--1)=-4
2+p/-2p+1=-4
2+p=-4(-2p+1)
2+p=8p-4
2+4=8p-p
6=7p
p=6/7

Princecalm:
Find y, if sqr/12 - sqr/147+ y sqr/3 =0

2√3-7√3+y√3=0
2√3-7√3=-y√3
-5√3=-y√3
y=5.

RobinHez:
if α and β are the roots of the quadratic equation x^2 -10x +2= 0 , find the value of 1/α^2 + 1/β^2
a. 26
b. 24
c. 3/2
d. 3

1/a^2. + 1/b^2
=>> a^2+b^2/(ab)^2

from factorization a^2+b^2=(a+b)^2 - 2ab


thus... [(a+b)^2 - 2ab]/(ab)^2


a+b = sum of root= 10
ab=product of root =2



= [ 10^2 - 2(2)] / (2)^2
=(100-4)/4
=96/4
=24.

chibuzineo:
My Faithy and Medwhite, I hail una oh

my oga. I hail oo

RobinHez:
Tell me something good about the afternoon =-O

RobinHez:
I just dey. longest time!

Yeah. good afternoon.

RobinHez how fa na?

RobinHez:

how u take do am?

PRT=225. t=3

PR=225/3=75.



comp interest= Amount - principal.
153= P(1-R)^2 - P

153= P[(1-R)^2-1)]

153= P(1-2R+R^2-1)

153= P(2R+R^2)

153=2PR-PR^2

153=2PR- (PR)R

recall PR=75

153=2(75)-(75)R

153-150=75*R

3=75R

R=3/75


R=0.04


since PR=75

P=75/0.04

P=1875.

RobinHez:
The simple interest on a certain sum of money for
3 years is 225 and the compound interest on the
same sum at the same rate for 2 years is 153
then
the principal invested is:
a. 1500
b. 2250
c. 3000
d. 1875
e. 2000

. At last......D.(1875)

RobinHez:
Rambos! Take this morning tea!
If (2/4)^x (2/3)^y = 32, find the value of 3y - 2x

A. -1
B. 7
C. 1
D. -7
E. What you think it is....(In case)

10... E

RobinHez:
Here's a biscuit to add to the tea...
A rectangular metal block of volume 10^-6m³ at 273K is heated to 573K. If its coefficient of linear expansion is 1.2x10^-5K^-1, the percentage change of its volume is
A. 1.5%
B. 1.1%
C. 0.1%
D. 0.45%

B

TryAces:

OhK o

Yes Boss.

RobinHez:

Ok i get ur point............but I'on know the answer to ur question

Weight W= Force F
W=MeM/Re^2 -----------(1)


1/2W=MeM/(Re+H)^2--------(2)


(1)÷(2)

W/0.5W=(MeM)/(MeM) * Re^2/(Re+H)^2


2=(Re+H)^2/Re
Radius of the earthRe=6400km=6400000m

√2=Re+H/Re

Re√2=Re+ H


Re√2-Re=H

Re(√2-1)=H

√2=1.4
Re(1.4-1)=H

6.4*10^6*0.4=H
2.6*10^6M

RobinHez:
some uses of Ultrasonic sound
1. Destroys bacteria in water
2. Used in cleaning metals
3. Used in drying papers
4. Used in removing smoke from air.

BTW, Ultrasonic sound is the kind of sound we humans can't hear, due to its high frequency. The normal human ear can only respond to frequencies between 20Hz to 16000Hz.

WoW! cool tips.

RobinHez:
Medwhite's formula for finding the weight of a body outside space is a good one. Its also faster. He gives it as; W₁R₁² =W₂R₂²

Previously, I'd first find the mass, then find g₂ and finally find the weight...too boring! But I still love physics!

big bro...the formula doesn't apply to all questions...it is used when comparing the weight of a body in diff radius on the earth.

Check out this one.
g=go * w^2
where w= Re/Re + h
g=go [(Re)^2/(Re+h)^2]
go =A due to gravity of earth
g=A due to gravity due to increase in height.
Re radius of of earth.
h= altitude or height at which a body is placed.

that formula is used to get the change in A due to gravity due to increase in height....



back to my first sentence,
that formula Wr2=wr2.
can't solve this question...

At what distance from the earth surface would the weight of a body be halved??

TryAces:

C
abeg if i no correct jux bone me & talk answer...

urmm on a 2nd tot i'll go 4 option A

Messenger ribonucleic acid...mRNA. is the correct answer.