### Mathematics

 Group Admin: Olanrewaju Created on: 21st April 2020 # Members: 92 Institution: Federal University, Oye-ekiti

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#### Group Discussions (72)

Hi everyone
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• Humbly: Hello everyone
2 months ago
• Godwin chika glory: Hi, hope am welcome
2 months ago
• Meekmarvel: Aw una deh
2 months ago
• ifiokabasi: hi guys, I am a new member, I hope I am welcomed
2 months ago
• Stephen: hi
2 months ago
• mhizpresh: hello guys
2 months ago
• Haruna aliyu: How are you doing?
2 months ago
• AaCcTt: we are cool
2 months ago
• chuksdenny:             hi guy, i am new member i hope i am welcomed
1 month ago
Good day guys
I am dropping a mathematical problem now:

xy+3x+2y=6
yx+y+3z=-3
zx+2z+x=2
Find x, y & z.

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• Scepterderemi: Sorry bro.
Is this matrix.
2 months ago
• Meekmarvel: Wich topic
2 months ago
• Alfredmusa: wat topic
2 months ago
• Meekmarvel: Aw fa shimsa
2 months ago
• ifiokabasi: where did u get dis question 4rm
2 months ago
• AaCcTt: x=3
y=-1/5
z=-3/5

my solution is coming tomorrow,but i want u to check my answer before solution.
pls @olarenwaju,u reply is highly needed
2 months ago
projectile
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• ifiokabasi: where is the question on projectiles?onyeka
2 months ago
A cylinder is 7cm high and closed at one end. If the total surface area 462cm², calculate its radius (π=22/7)?
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Hi i hope am welcome
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Post more questions guys
lets have some fun
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Express 302.10495 correct to five significant figures
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• AaCcTt: 302.105
2 months ago
Hi everyone pls I don't know mensuration. I need help.
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• AaCcTt: ok,that is not a problem,but what you have first know is the formula for each shape.

we will explain better when you post questions
2 months ago
• Princess: The figure below shows a cylindrical container mounted on an hemisphere bowl. The diameter of the hemisphere bowl is 10cm. If the figure has height 14cm,find:
a)the total surface area of the whole figure.
b)the volume of the figure
2 months ago
• AaCcTt: d=10cm
h=14cm
¥=22/7
1)T.S.A(whole figure)=T.S.A(hemisphere)+T.S.A(cylinder @ one end closed)
T.S.A=3¥r^2 + (2¥rh + ¥r^2)

recall that
d=2r
r=d/2
r=10/2
r=5

T.S.A=(3*5^2 *22/7) + [(2*5*14*22/7)+(5^2 *22/7)]
=(3*25*22)/7 + (10*44)+(25*22)/7
=1650/7 + 440 + 550/7
=235.7+440+78.6
=754.3 cm2 ~ 754 cm2

2)V=volume of hemisphere + Cylinder
V=2/3 ¥r^3 + ¥r^2h
V=(2/3 * 22/7 *5^3)+(22/7 * 5^2 * 14)
V=(2*22*125)/(3*7) + (22*25*2)
V=5500/21 + 1100
V=261.9 +1100
V=1361.9 cm3 ~ 1362 cm3
2 months ago
• Princess: Thanks @ Princess
1 month ago
• AaCcTt: it is my pleasure
1 month ago
Pls let us think and find 27 figure of speech e.g. hit the nail on the head
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• Princess: To hit the nail on the head is not a figure of speech but an idiomatic expression.
Examples of figure of speech are : pun, alliteration, metaphor, simile,hyperbole, climax, anti climax,assonance,personification,apostrophe, euphemism, synedoche,anadiplosis,repitition,rhetorical questions, irony,pathos and so on.
2 months ago
• ifiokabasi: pls I need help in construction and locus
2 months ago
• NWANNE: I think we should spot out the idioms from that picture.I can see "kick the bucket"
2 months ago
• AaCcTt: yea
2 months ago
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• ifiokabasi: where did u get dis question form hamza
2 months ago
• Dear star: That is how i saw it
1 month ago
• ifiokabasi: are you sure that it is a question or an answer check it again @hamza
1 month ago
find the equation whose roots are 5 and -3

the internal and external radii of a water pipe are 9cm and 10cm respectively
if the pipe is 35cm long, find, in cm^3,the volume of the material used in making it [take Π=22/7].
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• AaCcTt: x=-3 or 5
(x+3)(x-5)
x(x-5)+3(x-5)
x^2 -5x +3x -15=0
x^2 - 2x - 15=0
2 months ago
• AaCcTt: V=internal volume + external volume

r(int.)=9cm
r(ext.)=10cm
h=35cm
¥=22/7
volume of pipe=¥r^2 h
V=(22/7 * 9^2 *35)+(22/7 * 10^2 * 35)
V=(22*81*5)+(22*100*5)
V=8910+11000
V=19910cm3
2 months ago
• ifiokabasi: thanks to you Mr genuis
1 month ago
• AaCcTt: it's my pleasure
you are always welcome chum
1 month ago
• ifiokabasi: what is chum? I don't understand
1 month ago
• AaCcTt: i mean thanks friend
1 month ago
• AaCcTt: chum mean friend
1 month ago
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• NWANNE: here's what i've done so far
2 months ago
• AaCcTt: then x=70
2 months ago
Anybody here??
Lets make some noise
lets solve a little

comment with you question
lets play
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• AaCcTt: find x,if log 7 base 2 * log64 base x=7

2 months ago
•      2 months ago
•      2 months ago
• AaCcTt: correct bros,but can u do it without 4fig. table or calculator
2 months ago
• Scepterderemi: Maybe..................... that's just how i can do it. You know
2 months ago
• Scepterderemi: Guys contribute to this.
2 months ago
• AaCcTt: ok thanks,am asking cos when i did it without calculator or 4fig. table,i get
7^(6/7)
2 months ago
post ur question let them help u out
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• Scepterderemi: Out of 60 members of an Association, 15 are Doctors and 9 are Lawyers. If a member is selected at random from the Association, what is the probability that the member is neither a Doctor nor a Lawyer.
2 months ago
• AaCcTt: T=60
D=15
L=9
Pr(neither a doctor nor lawyer)=(60-(15+9))/60
=(60-24)/60
=36/60
=3/5
2 months ago
• Scepterderemi: Correct
1 month ago
• AaCcTt: thanks @scepterderemi
1 month ago
Help me solve this
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• AaCcTt: x=216
1 month ago
• AaCcTt: 36+18+x+90=360
x+144=360
x=360-144
x=216
1 month ago
• Oluwafemi: Thanks
1 month ago
• AaCcTt: it is my pleasure
1 month ago                              Helps 2020/2021 WASSCE and NECO students pass their mathematics examination.

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