Sunday, September 27, 2020
Tuesday, August 18, 2020
Waec 2020 2021 answer
aths O B J
1-10.DCBCABBADA
11-20.CCBCABABBA
21-30.AACCDCDABC
31-40.BCDCDCBABA
41-50.ACADBBDADD
MATHS- ANSWERS
================================
6a )
Sn= n /2 (2 a +( n- 1 ) d )
A =1 , d= 2 , n = n
Sn= n /2 (2 * 1 + (n - 1) 2)
N /2 (2 + 2, - 2 )
=n / 2* 2 =n ^ 2
6b )
n( E )=95 , n( BnT )=7
N (U )=95 , n (BnTnC ')=7 n (B 'nTnC )=3 , n (BnTnC )=8
n( BnT 'nC ')=x , n( BnT 'nC ) , n ( b)=47 , n (T )=30
i )
Draw d venn diagram
ii)
To find x ,
X +x + 7+ 8 =47
2x = 47 - 15 = 32
X =32 /2
=16
iii)
No of those who travelled by at least two means
7+ 3 + 16 + 8= 34
(6b)
IMG: IMG-20160421-WA016.jpg(93.37 KB)
13 a )
(x 1 , y 1) = (2 , - 3)
for 2x + y = 6
y = - 2x + 6
compare y = mx +6
m2 = - 2
for parallel lines , m1 = m2
: y - y 1 / x - x 1 = m
y - - 3/ x - 2 = - 2 / 1
y + 3 = - 2 (x - 2 )
y + 3 = - 2 x + 4
y = - 2 x + 4 - 3
y = - 2 x + 1
(11a )
3p + 4 q/ 3p - 4q * 2 /1 find p: q
1( rp+ 4q )= 2 ( 3p - 4q )
3p + 4 q= 6 p- 8 q
Collect like terms
3p - 6p = - 8 q - 4 q
- 3 p =- 12 q
Ther 4 p : q = - 3 p/ - 3 = - 12 q /- 3
P =4 q , p = 4, q =1
P : q = 4: 1
11 b )
Ts = pq - (2 + 2)
Ts = pq - 4
Circumference of Ts = 2pie (TS )
11 bi.
Ts = pq - (2 + 2)
Ts = pq - 4
Circumference of Ts = 2pie (TS )
=2 pie (pq - 4 )
Perimeter= pq + 4+ 4 + 2+ 2 +2 pie (pq - 4 )
34 = pq + 12 + 2 pie ( pq - 4 )
34 - 12 = pq + 2 piePQ- 8 pie
22 = PQ( 1 +2 pie ) - 8pie
22 = pq ( 1( 2* 22 / 7 ) - 8* 22 / 7
22 = pq ( 1+ 44 / 7 ) - 176/7
22 = PQ( 7 +44 /7 ) - 176/7
22 + 176/7 = pq ( 51 / 7)
154+176/ 7 =Pq (51 /7 )
330/7 = pq (51 /7 )
330/51 =pq
Pq = 6 . 4706
11 bii .
TS = PQ - 4 = 6. 4706- 4 =2 . 4706 m
Area of semi circle TS =pieD
=7 . 7626m^ 2
Area of rectangle PqRU=| pu |*| Pq |
4** 6. 4706= 25 . 8824
Area of the cross section = area of rectangle- area of semi
circle
=25 . 8824 - 7. 7626
=18 . 1198 m^ 2
(No9)
IMG: IMG-20160421-WA022.jpg(0 B)
9a )
x 62 63 64 65 66 67 68
tally 1 iiiii iiiii iiiii ii iiii iiii iiii iiiii iiiii iiiii i ii
freq 1 5 12 14 10 6 2 total = 50
fx 62 315 768 910 660 402 136 tot = 3253
x - x - - 3 . 06 - 2. 06 - 1 . 06 0 . 06 0. 94 1 . 94 2 . 94
(x - x - ) 9. 3636 4. 2436 1. 1236 0 . 0036 0 . 8836 3 . 7636
8. 6436
f ( x - x ) 2 9 . 3636 21 . 218 13 . 4832 0 . 0504 8 . 836 22 . 5816
17 . 2872 tot = 92 . 82
bi) mean = EFX/EF = 3253 /50 = 65 . 06
bii ) Standard deviation = Square root of EF (x - x ) 2/ Ef
= Square root of 92 . 82 /50
= square root of 1. 8564
= 1. 36
7a )
x - 2 /4 : x + 2 /2 x
Cross multiply
2x ( x - 2 )=4( x + 2 )
Opening the bracket
2x ^ 2- 4 x = 4x + 8
Collect like terms together
2x ^ 2- 4 x - 4 x - 8 =0
2x ^ 2- 8 x - 8 =0
Solving with completing the square method
2x ^ 2- 8 x = 8
Divide through with the coefficient of x ^ 2
2x ^ 2/ 2 - 8 x /2 = 8/ 2
X ^ 2 - 4 x = 4
Half of coefficient of x
(- 4 x 1/ 2 )^ 2 = (- 2)^ 2
X ^ 2 - 4 x + (- 2)^ 2 = 4+ (- 2 )^ 2
X ^ 2 - 4 x + (- 2)^ 2 = 4+ 4
(x - 2 )^ 2 = 8
X - 2 : square root 8
X =2 + or - squar root 8
X =2 + square root 8 or x =2 - square root 8
X =2 + 2. 828=4 . 828
X =2 - 2. 828= - 0 . 828
X =4 : 83 or - 0 . 83 .
8a )
< KGF = 110
2x = r = y
if < KGF = 110, < MGH = 180 - 110
< MGH = 70 degree
< HMG = Y
< MHG = 180 - Y - 70
< MHG = 110 - Y
< LHJ = 180 - (110 - Y )
=180 - 110 + Y = 70 + Y
nOW : X + r + 70 + y = 180
2x = r + - y
if 2x = r
x = r / 2 =y
: x + 2 x + 70 + 2x = 180
5x = 180 - 70 = 110
x = 110/5 = 22 degree
8b )
let A collection of boy be X and that of girl be y
Tot collected by boy
600 + Y = x
Tot collected by girl
x - 600 = y
x - y = 600 - - (i )
Ave collection for boys
x / 10 = 100+y / 12 (multipled by 120)
x / 10 * 120 = 100 * 120 + y / 12 * 120
12 x = 12000 + 10 y
12 x - 10 y = 12000 - - - ( ii) /x - y = 600 * 12
12 x - 10 y = 12000 * 1
12 x - 12 y = 7200 - - - - ( iii)
12 x - 10 y = 12000
= - 2 y = - 4800
y = 4800/ 2 = 2400
y = 4800/ 2 = 2400
subt 2400 for y in eq(i )
600 + y = x
600 + 2400 = x
x = 3000,
boys collection = # 3000
girls collection = # 24000
total collected = # 54000
========================
5a )
Area of triangle= 1/ 2 bh where h =6
: . 1 /2 * 6 / 1* b /1 =36
6b / 2= 36 / 1
6b = 72
B =72 /6
Base of angle PSR =12 cm
Since |TS | / /PQ
QR= PR - PQ
QR= 12 - 8
QR= 4 cm
5b )
Draw d triangle
From angle ABC, to get | BC |
Tan 60 / 1= 10 cm / |BC |
|BC |= 10 . 65 /tan 60
|BC |= 10 . 65 /1 . 7321
=6 . 1486 =6 . 15 m
Hence | BC | =| DE|
From angle AED , to get | AE |
Draw d diagram
|AB |= 6. 15 tan 45
6. 15 * 1
=6 . 15 m
Sunday, August 16, 2020
NABTEB May/June Examination Timetable 2020 FOR TECHNICAL AND SCIENCE SCHOOLS
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NABTEB May/June Examination Timetable
NABTEB May/June Examination Timetable: National Business and Technical Examinations Board (NABTEB) 2020 National Business Certificate (NBC) and National Technical Certificate (NTC) Examinations May/June is now out. Continue reading to see more details below.
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Monday, June 8, 2020
NABTEB Timetable 2020/2021 For May/June Examinations
Thursday, June 4, 2020
Kogi state New record of covid19 news
Governor Yahaya Bello of Kogi State has placed all the
communities in Kabba/Bunu council areas on ‘absolute’
lockdown following the positive testing of two persons in
the council area to COVID-19
The Nigeria Centre for Disease Control had on Wednesday
stated that two persons from the state, the Chief Imam of
Kabba Land and his son, tested positive to the virus. A
development that further emboldened the
Bello said effective from Tuesday midnight all the c
ommunities from the area where the patients reside should
stay indoors permanently for two weeks.
He also said all doctors who have contacts with the
patients be ordered to go into self-isolation.
The governor, however, maintained that the state is still free
from the virus until the centre claims are verified.
Saturday, May 30, 2020
Npower news today
Several N-Power beneficiaries have said they have not
received their April stipends, disputing a statement by the
Minister for Humanitarian Affairs, Emergency and Social
Development, Sadiya Farouq.
Farouq had on Saturday announced the payment of April
stipends to N-Power beneficiaries and further hinted at
plans to streamline the programme for better efficiency
upon payment of May stipends.
She also admitted that her ministry encountered issues
with the Government Integrated Financial Management
Information System (GIFMIS) that caused the delay of
payment to the beneficiaries.
The minister’s comments came against the backdrop of
the outcry by the beneficiaries for their April stipends amid
the economic impacts of the restrictions to contain
COVID19 across Nigeria.
Monday, May 18, 2020
Nigerian doctors condemn ‘unfortunate’ situation in Kogi, Cross River Coronavirus
The Nigerian Medical Association
(NMA) has described as ‘unfortunate
and condemnable,’ the continued
obstruction of the National Centre for
Disease Control (NCDC) by the
governments of Kogi and Cross River
State.
“This impedance is despite the lofty
provisions in the NCDC Establishment
Act (2018) which empower the
organization to “prevent, detect,
monitor and control” activities and
programs for the national response
against infectious diseases epidemics
and other public health emergencies;
and also to “lead, develop,
coordinate”, the NMA said in a
Saturday statement signed by its
President, Francis Faduyile.
Governments in both states, which are
the only two yet to confirm any case of
the virus, have been at loggerheads
with the NCDC and federal authorities
for discouraging COVID-19 testing and
not adhering to the national response
strategy.
Authorities in Kogi and Cross Rivers
believe there is a plot to compulsorily
report COVID-19 cases in the states but
medical experts and federal officials
said the low number of test samples
turned in from the states is making it
difficult to ascertain if they are actually
coronavirus-free.
The statement by the NMA followed an
earlier one in which it urged the
federal government to direct through
the Presidential Task Force (PTF) an
investigation into the COVID-19 free
status of Kogi and Cross Rivers.
The doctors said an investigation into
the status and response to the
coronavirus by the two states’
governments is in the interest of
safeguarding Nigeria’s public health,
and to recommend appropriate
remedial intervention if necessary, to
President Muhammadu Buhari.
In Saturday’s release, Mr Faduyile said
the situation requires urgent
intervention by the president.
Despite being surrounded by states
with confirmed cases of the virus, the
government in Kogi has at least once
scuttled efforts by the NCDC to
coordinate COVID-19 testing.
Last Thursday, a delegation comprising
officials of NCDC and the Department of Hospital
Services of the Federal Ministry of Health had to flee
the state for fear of being quarantined by the Kogi
State Government.
The NMA chapter in the North-central state had
expressed concern over the stance of the Kogi
government, warning that the consequences of not
testing people for the COVID-19 may be too
- enormous to deal with.
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