Hello, welcome to Earboard.com Expo page for the Neco 2020 Mathematics (Maths) questions and answers. Neco 2020 Mathematics Expo Questions and Answers are now available on Earboard.com. For those who have paid for our Expo, kindly click the link below to enter your password. If you have not subscribed, then read further to learn how to subscribe for the Neco GCE 2020 Mathematics Expo Questions and Answers.

Read Also: Neco 2020 English Answers (Theory, Objective and Oral Expo)
Take Our Paid Runz: With N400, we will send you the password to view all the answers 3 hours before the exam starts. To make a payment, simply buy MTN Recharge card of N400 and send the pin, subject paid for and phone number to 09067385575 . You can also do transfer to the number or contact us for our bank details. Or

Benefits of Paid Runz

• Answers come before exam starts
• You only need one password to get the answers (Registration / login is not compulsory)
• You get alert immediately when we post the answers etc

How to send the card: Type the card pin, your subjects & phone number and send to 09067385575. You can also call or message the above number for more details.

Why we are the best? We give you 24/7 customer support. We offer the cheapest Runz (N400 per Subject, N3000 for 8-9 Subjects and N5000 for all our runz). Our answers are real and genuine. We also give free Runz to candidates who cannot afford our paid Runz. Where else on the internet can you get this kind of service? Subscribe now and enjoy while it lasts!

Read Also:
Refresh this page 45 minutes after exam starts for our Free answers.

See The Requirements for the Free Runz

• You must be registered on this website before you can access the free answers (Registration is Free)
• You must be logged in before you can see answers
• You will have to wait for at least 30 minutes after the exam might have started
• You will have to share this post on Facebook and other social media before you become eligible for the free runz

Neco 2020 Mathematics Questions and Answers

Paper III: Objective – General Mathematics
10:00am – 11:45am

Paper II: Essay – General Mathematics
12:00noon – 2:30pm

MATHEMATICS OBJ:
1-10: ACBAECABAE
11-20: CCABBCACEE
21-30: BBEBBBACBD
31-40: CCAEBAAABD
41-50: DABBBCCBBD
51-60: DACEADAEEA

IMAGE SOLUTIONS UPLOADED.
IF YOU’VE GOT A GOOD PHONE.. PLEASE USE THE IMAGE ANSWERS FOR BETTER UNDERSTANDING…

(1a)
x¹ y¹. x¹ y¹
A (6,5), B ( -2 ,7)

The equation of a straight line
y² – y¹/x² – x¹ = y-y/x¹-x¹

7-5/-2-6 = y-5/x-6
2/-8 = y-5/x-6
-1/4 = y-5/x-6
4(y-5)= -1(x-6)
4y-20= -x+6
4y+x=6+20
4y+x=26

(1b)
∫² (2x + 9)dx
-²
2x²/2+9x + c|²_¹
x² + 9x + c|²_¹
(2² + 9(2) + C) – ((-1)² + 9 (-1)+ c)
(4+18+c) – (1-9+C)
(22 + C) – (-8 + C)
22+C + 8 – C
=30
CLICK HERE FOR THE IMAGE

(2a)
To calculate u; 18+5+12+u=52
35+u=52
u=52-32=17
u=17

To calculate v
6+5+12+v=35
23+v=35
v=35-23=12
v=12

To calculate w
w+18+17+6+5+12+12
=100
w+70=100
w=100+70=30
w=30

(2b)
at least two means =18+6+5+12=41
;- 41 tourists traveled by at least two means of transportation
CLICK HERE FOR THE IMAGE

(3a)
(i)median =6+6/2=12/2=6
(ii)median + range = 6+7=13
Range = highest value – lowest value = 10-3=7

(3b)
Pr(both pass)
=2/5*3/4=6/20=3/10
CLICK HERE FOR THE IMAGE

(4a)
x²+3x-28=0
x²+7x-4x-28=0
x(x+7)-4(x+7)=0
(x-4)(x+7)=0
x-4=0 or x+7=0
x=0+4 or x=0-7
x=4 or -7

(4b)
8x/9 – 3x/2 =5/6 – x/1
L.c.m=54
6*8x-27*3x=9*5-54*x
48x-81x=45-54x
48x-81x+54x=45
21x/21=45/21
x=45/21=15/7=2⅐
CLICK HERE FOR THE IMAGE

(5a)
Let u = 4x³ – 2x + 4 ,
y = u³ , du/dx = 12x²-2,
dy/du=3u²

dy/dx= dy/du*du/dx
=3u²*12x²-2
=(36x² – 6) u²
Recall u=4x³ – 2x + 4
dy/dx= (36x² – 6) (4x³-2x + 4)²

(5b)
5/3(2-x) – (1-x)/2-x = 2/3
L.c.m= 3(2-x)
5-3(1-x) = 2(2-x)
5-3+3x=4-2x
2+3x=4-2x
3x+2x=4-2
5x/5=2/5
x=2/5
CLICK HERE FOR THE IMAGE

(6a)
Volume of a sphere = 9⅓ of its surface area 4/3 πr³=28/3*4πr²
4πr³/3*112πr²/3
3*4πr³=3*112πr²
12πr³=336πr²
Divide through by 12πr²
12πr³/12πr² = 336πr²/12πr²

r=28cm

(i)surface area =4πr²
=4*22/7*28cm*28cm
=98cm²

(ii) volume =4/3πr³
=4/3*22/7*28cm*28cm*28cm
=91989.33cm³ ≅ 91989cm³

(6b)
Log10 (3x-5)² – Log10 (4x-3)² =Log²⁵,¹⁰
(3x-5/4x-3)²=25
Square root both side
3x-5/4x-3=5/1
5(4x-3)=3x-5
20x-15=3x-5
20x-3x=-5+15
17x=10=x = 10/17
CLICK HERE FOR THE IMAGE

(7a)
(y,x)
(3,2)perpendicular to the line 3x + 5y = 10
3x + 5y =10
5y/5= -3x/5 +10/5
y=3x/5 + 2
m=3/5

The equation of a line y= y¹=1/m(x-x¹)
y-2= 1/⅗(x-3)
y-2=-5/3(x-3)
3(y-2)=-5(x-3)
3y-6= -5x + 15
3y= – 5x + 15 + 6
3y/3= -5x/3 + 21/3
y= -5x/3 + 7
Gradient = -5/3 intercept = 7

(7b)
Compound interest = p(1+R/100)n-p
=8000(1+5/100)³ – 8000
=8000(1+0.05)³ – 8000
=9261 – 8000
Compound interest= ₦1261
CLICK HERE FOR THE IMAGE

(8a)
Ta; a+8d=50 ——–(1)
T12; a+11d=65———(2)
Subtract equation (1) from (2)
a+11d-(a+8d)=65-50
a+11d-a-8d=15
11d-8d=15
3d/3=15/3
d=5

Substitute for d=5 in each equation (1)
a+8d=50
a+8(5)=50
a+40=50
a=50-40=10
Sn=n/2(2a+(n-1)d)
S70=70/2(2*10+(70-1)5)
=35(20+69*5)
=35*365=12,775

(8b)
V=t²-3t+2
d³/dt=v
d³/dt=t²-3t+2
v=6²-3(6)+2
=36-18+2
v=20mls

Recall; ds/dt=v
ds=vdt
∫ds=∫vdt
S=∫vdt
S=∫20dt
S=20t+c
Where c is constant
CLICK HERE FOR THE IMAGE
CLICK HERE FOR THE IMAGE

(10a)
Let daughter = x
Woman = 4x
In 5 years time;
daughter = x + 5
Woman = 4x + 5

(4x + 5)² = (x + 5)² + 120.
(4x + 5 ) (4x + 5) = (x + 5) (x + 5)+ 120

16x² + 20x + 20x + 25 = x² + 5x + 5x + 25 + 120

16x²+40x+25= x²+10x+145

16x²-x²+40x-10x+25-145=0
15x²+30x-120=0
Divide through by 15;
15x²/15+30x/15-120/15=0/15

x² + 2x – 8= 0
x² + 4x – 2x – 8= 0
x(x+4) – 2 (x + 4) = 0
(x-2) (x+4)=0
x – 2= 0 or x+ 4= 0
x=2 or x=-4
x=2

The daughters’ age is 2years

(10b)
t=w+wy²/pz
t-w/1 * wy²/pz
10/y²/10 = pz(t-w)/w
y=√pz(t-w)/w
y=√5*10(9-3)/3
y=√5*10*6/2
=√100=10
;- y=10
CLICK HERE FOR THE IMAGE

(11)
TABULATE

|Score|5-9|10-14|15-19|20-24|25-29|30-34|

|Frequency|3|10-T|3T|8|2T+2|T+2|

(a)Ʃ+=50
3+10-T+3T+8+2T+2+T+2=50

3+10+8+2+2-T+3T+2T+T=50

25+5T=50
5T=50-20
5T/5=25/5
T=5

(11b)
|Score|5-9|10-14|15-19|20-24|25-29|30-34|

|Frequency|3|5|15|8|12|7|

The frequency of the modal class is 15.

(11c)
Tabulate.
|Score|5-9|10-14|15-19|20-24|25-29|30-34|

|F|3|5|1|5|8|1|2|7|50

|X|7|12|17|22|27|32|

|FX|21|60|255|176|324|224|1060

|X-x̅|-14.2|-9.2|-4.2|0.8|5.8|10.8|

|(X-x̅)²|201.64|84.64|17.64|0.64|33.64|116.64|

F|(X-x̅)|604.92|423.2|264.6|5.12|403.68|816.48|2518

Mean (x̅) =Ʃfx/Ʃf=1060/50=21.2

Variance =Ʃf(x-x̅)²/Ʃf
=2518/50
=50.36
CLICK HERE FOR THE IMAGE

(12a)
y=²-2x-3
Tabulate
|x|-2|-1|0|1|2|3|
|y|5|0|-3|-4|-3|0|

(12b)
Graph: CLICK HERE FOR THE IMAGE

(12c)
y=1-3x
|y|-2|-1|0|1|2|3|
|x|7|4|1|-2|-5|-8|

(12d)
(i)the root of the equation x² – 2x – 3= 1-3x are -3 and 1.6

(ii) the minimum value of y is – 4 and the corresponding value of x is 1

MATHEMATICS QUESTIONS 👇

Related Search Terms:

NECO 2020 Mathematics expo answers, 2020 Mathematics objective and essay Expo answers now available, nov/dec Mathematics theory Answers for 2019, Mathematics obj and theory Questions NECO Ssce Expo Answers Here, Free  Mathematics objective, essay & theory correct Expo 2020 answers Runz NECO Mathematics, NECO 2020 Free Mathematics essay, obj and theory Questions and Answers Expo for NECO GCE Mathematics Paper 1 and Paper 2 objective and essay Questions and Answers Expo Now Posted, Free Mathematics objective ans for public schools, see NECO 2020 expo Mathematics obj and theory, essay questions for free, loadedexpo correct wassce Economics ans, sure NECO 2020 Mathematics objective answers runz runs expo free real and correct NECO 2020. Mathematics free expo runz runs ans answers online for free see free answers online, 2020 Verified NECO Free GCE Mathematics Obj and theory Answers have been posted REAL NECO SSCE Mathematics QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2020 WASSCE Mathematics (Expo) NECO 2020 certified runs Mathematics questions and answers NECO SSCE November/December 2020 Mathematics THEORY / ESSAY / OBJ QUESTION AND EXPO I need NECO ssce free expo site, how can I get WAEC Mathematics answer for free, NECO 2020 Mathematics essay, Objective And Theory Question and Answer Now Posted, Real 2020/2021 nov/dec  NECO Mathematics objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2020 NECO Mathematics theory, essay and obj NECO Mathematics expo website, NECO ssce Mathematics live cheats, sure November/December NECO SSCE 2020 Mathematics original objective, theory and essay questions and answer now available here, 100% NECO ssce Mathematics expo, 2020 wassce Mathematics obj, essay and theory runz now posted, correct NECO ssce Mathematics
objective, essay (theory) answer now ready, free 2020 wassce GCE Mathematics obj, theory and essay best expo site Neco GCE Mathematics questions and answers, password for certified WAEC GCE Mathematics essay theory obj expo, how to get/ where to get wassce GCE Mathematics theory, essay and objective expo answer direct to my phone as text message, trusted NECO ssce GCE Mathematics questions and answer, i need NECO Ssce nov/dec Mathematics essay theory objective obj Expo 2020 answers on whatsapp, gidifans Mathematics answer, solutionclass Mathematics answer, 042tvseries Mathematics answer, codedexam NECO Mathematics answer, wapbaze Mathematics answer, wapextra Mathematics expo, Martinlibrary Mathematics expo, examgists NECO Mathematics expo, NECO Mathematics objectives answer, naija NECO GCE Mathematics expo free answer Real and Confirmed WAEC Maths Questions and Expo GCE.
neco mathematics questions 2020 neco 2020 mathematics question and answer
2020 neco mathematics questions and answers

neco 2020 general mathematics

neco 2020 mathematics past questions

neco 2020 mathematics questions

neco maths question 2020

neco mathematics answer 2020
neco maths answers