Table of Contents
WAEC Mathematics 2021 Answers – WAEC mathematics Questions 2021, free verified objective and theory answers (Expo) for West Africa examination council (May/June) 2021. WAEC mathematics objective and theory answers For you to have good WAEC result in Mathematics examination as well as repeated questions for free in this post. You will also understand how WAEC mathematics questions are set and how to answer them. The West African Examinations Council is an examination board established by law to determine the examinations required in the public interest in the Englishspeaking West African countries, to conduct the examinations and to award certificates comparable to those of equivalent examining authorities internationally. CLICK TO SEE WAEC MATHEMATICS EXAM 2021 QUESTIONS & ANSWERS.
WAEC mathematics exam date and time is
 Paper III: Objective – General Mathematics – 10:00am – 11:45am –
 Paper II: Essay – General Mathematics – 12:00noon – 2:30pm
We are getting things ready for you. Stay tune as our teams are right now verifying the exam question and getting the mathematics answers ready.
Please Note that the WAEC 2021 General mathematics OBJECTIVE and theory questions and answers and any other NECO expo is provided by us for free. We understand that a lot of website charge of collect money from student to provide WAEC expo mathematics theory answers to them. WAEC questions and answers are provided for free. We will do same during Other Exam like NECO, GCE.
2021 WAEC Mathematics questions and answers
Today’s Mathematics Essay
Mathematics Loading…99.9% completed
SORRY: Due to some problem encounter, we are not uploading it here Whatsapp 09035742503 or CLICK TO MATHEMATICS QUESTIONS AND ANSWERS
(1a)
Given A={2,4,6,8,…}
B={3,6,9,12,…}
C={1,2,3,6}
U= {1,2,3,4,5,6,7,8,9,10}
A’ = {1,3,5,7,9}
B’ = {1,2,4,5,7,8,10}
C’ = {4,5,7,8,9,10}
A’nB’nC’ = {5, 7}
(1b)
Cost of each premiere ticket = $18.50
At bulk purchase, cost of each = $80.00/50 = $16.00
Amount saved = $18.50 – $16.00
Amount saved = $18.50 – $16.00
=$2.50
=======================================
(2ai)
P = (rk/Q – ms)⅔
P^3/2 = rk/Q – ms
rk/Q = P^3/2 + ms
Q= rk/P^3/2 + ms
(2aii)
When P =3, m=15, s=0.2, k=4 and r=10
Q = rk/p^3/2 + ms = 10(4)/(3)^3/2 + (15)(0.2)
= 40/8.196 = 4.88(1dp)
(2b)
x + 2y/5 = x – 2y
Divide both sides by y
X/y + 2/5 = x/y – 2
Cross multiply
5(x/y) – 10 = x/y + 2
5(x/y) – x/y = 2 + 10
4x/y = 12
X/y = 3
X : y = 3 : 1
=======================================
(3a)
Diagram
CBD = CDB (base angles an scales D)
BCD+CBD+CDB=180° (Sum of < in a D)
2CDB+BCD=180°
2CDB+108°=180°
2CDB=180°108°=72°
CDB=72/2=36°
BDE=90°(Angle in semi circle)
CDE=CDB+BDE
=36°+90
=126
(3b)
(Cosx)² – Sinx given
(Sinx)² + Cosx
Using Pythagoras theory thrid side of triangle
y²= 1²+√3
y²= 1+ 3=4
y=√4=2
(Cosx)² – sinx/(sinx)² + cosx
(1/2)² – √3/2/
(√3/2)² + 1/2 = 1/4 – √3/2 = 12√3/4
3/4+1/2 = 3+2/4
=12√3/4 * 4/5
=12√3/5
=======================================
(4a)
Total Surface Area = 224πcm²
r:l = 2:5
r/l = 2/5
Cross multiply
2l/2 = 5r/2
L = 5r / 2
Total surface = πrl + πr²
= πr (l + r)
24π/π = πr (5r/2 + r )/ π
224 = 5r²/2 + r²/1
L.c.m = 2
448 = 5r² + 2r²
448 / 7= 7r²/7
r² = 64
r = √64 = 8cm
L = 5*8/2 = 20cm
(4b)
Volume = 1/2πr²h
= 1/3 * 22/7 * 8 * 8 * 18.33
= 1228.98cm³
L² = h² + r ²
20² = h² + 8²
400 – 64 = h²
h² = 336
h = √ 336
h = 18.33cm
=======================================
(5a)
Total income = 32+m+25+40+28+45
=170+m
PR(²)=m/170+m = 0.15/1
M=0.15(170+m)
M=25.5+0.15m
0.85m/0.85=25.5/0.85
M=30
(5b)
Total outcome = 170 + 30 = 200
(5c)
PR(even numbers) = 30+40+50/200
=115/200 = 23/40
=======================================
WAEC Mathematics Objectives Answers Answers 2021
WAEC Mathematics Objectives Answers (2021 Answers)
WAEC Mathematics Questions and Answers 2021
You are on this page because you want the 2021 WAEC General Mathematics expo. The question and answers will be posted here during the WAEC Mathematics examination. Keep checking and reloading this page for the answers.
WAEC 2021 Mathematics Answers Now Solving And Loading
(1b)
Cost of each premiere ticket = $18.50
At bulk purchase, cost of each = $80.00/50 = $16.00
=$2.50
=======================================
(2ai)
P = (rk/Q – ms)⅔
P^3/2 = rk/Q – ms
rk/Q = P^3/2 + ms
Q= rk/P^3/2 + ms
(2aii)
When P =3, m=15, s=0.2, k=4 and r=10
Q = rk/p^3/2 + ms = 10(4)/(3)^3/2 + (15)(0.2)
= 40/8.196 = 4.88(1dp)
(2b)
x + 2y/5 = x – 2y
Divide both sides by y
X/y + 2/5 = x/y – 2
Cross multiply
5(x/y) – 10 = x/y + 2
5(x/y) – x/y = 2 + 10
4x/y = 12
X/y = 3
X : y = 3 : 1
=======================================
(3a)
Diagram
CBD = CDB (base angles an scales D)
BCD+CBD+CDB=180° (Sum of < in a D)
2CDB+BCD=180°
2CDB+108°=180°
2CDB=180°108°=72°
CDB=72/2=36°
BDE=90°(Angle in semi circle)
CDE=CDB+BDE
=36°+90
=126
(3b)
(Cosx)² – Sinx given
(Sinx)² + Cosx
Using Pythagoras theory thrid side of triangle
y²= 1²+√3
y²= 1+ 3=4
y=√4=2
(Cosx)² – sinx/(sinx)² + cosx
(1/2)² – √3/2/
(√3/2)² + 1/2 = 1/4 – √3/2 = 12√3/4
3/4+1/2 = 3+2/4
=12√3/4 * 4/5
=12√3/5
=======================================
(4a)
Total Surface Area = 224πcm²
r:l = 2:5
r/l = 2/5
Cross multiply
2l/2 = 5r/2
L = 5r / 2
Total surface = πrl + πr²
= πr (l + r)
24π/π = πr (5r/2 + r )/ π
224 = 5r²/2 + r²/1
L.c.m = 2
448 = 5r² + 2r²
448 / 7= 7r²/7
r² = 64
r = √64 = 8cm
L = 5*8/2 = 20cm
(4b)
Volume = 1/2πr²h
= 1/3 * 22/7 * 8 * 8 * 18.33
= 1228.98cm³
L² = h² + r ²
20² = h² + 8²
400 – 64 = h²
h² = 336
h = √ 336
h = 18.33cm
=======================================
(5a)
Total income = 32+m+25+40+28+45
=170+m
PR(²)=m/170+m = 0.15/1
M=0.15(170+m)
M=25.5+0.15m
0.85m/0.85=25.5/0.85
M=30
(5b)
Total outcome = 170 + 30 = 200
(5c)
PR(even numbers) = 30+40+50/200
=115/200 = 23/40
=======================================
(7a)
Diagram
Using Pythagoras theorem, l²=48² + 14²
l²=2304 + 196
l²=2500
l=√2500
l=50m
Area of Cone(Curved) =πrl
Area of hemisphere=2πr²
Total area of structure =πrl + 2πr²
=πr(l + 2r)
=22/7 * 14 [50 + 2(14)]
=22/7 * 14 * 78
=3432cm²
~3430cm² (3 S.F)
(7b)
let the percentage of Musa be x
Let the percentage of sesay be y
x + y=100 ——————1
(x – 5)=2(y – 5)
x – 5=2y – 10
x – 2y=5 ——————2
Equ (1) minus equ (2)
y – (2y)=100 – (5)
3y=105
y=105/3
y=35
Sesay’s present age is 35years
=======================================
(8a)
Let Ms Maureen’s Income = Nx
1/4x = shopping mall
1/3x = at an open market
Hence shopping mall and open market = 1/4x + 1/3x
= 3x + 4x/12 = 7/12x
Hence the remaining amount
= X7/12x = 12x7x/12 =5x/12
Then 2/5(5x/12) = mechanic workshop
= 2x/12 = x/6
Amount left = N225,000
Total expenses
= 7/12x + X/6 + 225000
= Nx
7x+2x+2,700,000/12 =Nx
9x + 2,700,000 = 12x
2,700,000 = 12x – 9x
2,700,000/3 = 3x/3
X = N900,000
(ii) Amount spent on open market = 1/3X
= 1/3 × 900,000
= N300,000
(8b)
T3 = a + 2d = 4m – 2n
T9 = a + 8d = 2m – 8n
6d = 4m – 2m – 2n + 8n
6d = 2m + 6n
6d/6 = 2m+6n/6
d = m/3 – n
d = 1/3m – n
=======================================
More WAEC Mathematics 2021
(9c)
Speed = 20/4, average speed = 5km/h
(12a)
BCD=ABC=40°(alternate D)
DDE=2*BCD(<at centre = twice < at circle)
DDE = 2*40 = 80°
OD3=OED(base < of I sealed D ODE)
ODE + OED + DOE= 180°(sum of < is in D)
2ODE+DOE=180°
2ODE+80°=180
2ODE+180=180
2ODE+100°
ODE+100/2=50°
(12bi)
Digram
(12bii)
Area of parallelogram = absin
=5*7*sin125°
=35*sin55°
=35*0.8192
=28.67
=28.7cm²(1dp)
(12c)
Given x=1/2(1√2)
2x²2x=2[1/2(1√2] ²2(1/2(1√2)}
=2[12√2+2/4] (1√2)
=(32√2/2)(1√2)
=32√22+2√2/2=1/2
WAEC Mathematics Theory Answers 2021
Loading…99.1%
Subjects Related To WAEC Mathematics 2021 Questions and Answers

WAEC Chemistry Questions and Answers

WAEC Financial Account Questions and Answers

WAEC Physics Questions and Answers

WAEC Mathematics Questions and Answers

WAEC English Language Questions and Answers

WAEC Data Processing Questions and Answers

WAEC Geography Questions and Answers

WAEC Economics Questions and Answers

WAEC Biology Science Questions and Answers

WAEC Government Questions and Answers

WAEC Agric Science Questions and Answers

WAEC Commerce Questions and Answers

WAEC Tourism Questions and Answers

WAEC Catering Craft Practice OBJ AND ESSAY 2021 Questions and Answers

WAEC Animal Husbandry Questions and Answers

WAEC Igbo Language Questions and Answers

WAEC Yoruba Language Questions and Answers

WAEC Catering Craft Practice Practical 2021 Questions and Answers
if you have any questions about the WAEC Mathematics Questions and Answers 2021, kindly drop your question in the comment box