Home » Gidifans Examination Center (GEC) » Waec 2018 Further Mathematics Obj And Theory Answers – May/June Expo

GiDifans
Apr 08, 2018
16
1664

Gidifans Examination Center for All WAEC / WASSCE / SSCE, NECO, NABTEB, JAMB (UTME), Post-UTME, WAEC GCE, NECO GCE, NABTEB GCE Exam Expo, e.t.c

F/Maths OBJ:

1BCADDDDDBB

11DBABCCDDCC

21BCABBAABAB

31CBADBDDCAB

15a)

(2.2) + 80(0.6) = 300(1.2) + 100 (3)

2.2B + 48 = 360 + 300

2.B + 48 = 660

2.2B = 660 – 48

2.2B = 612

Reation at B = 278.18N

Taking moment about B

80(2.1) + 300(1) = 2.2A + 100 (0.8)

224 + 300 = 2.3A + 80

524 – 80 = 2.2A

A = 444/2.2

Raction a+ A = 201.82N

CLICK HERE FOR THE DIAGRAM

15b)

CLICK HERE FOR THE DIAGRAM

12)

TABULATE

No of head|x 0|12|3|45|6|7|8|9|10

Frequency|f|2|7|23|36|11|61|100|12|8|5|3

Fx| 0|7|46|108|44|305|600|84|64|45|30

Ef = 268 Efx = 1333

(a) mean no heads = Efx/Ef = 1333/268 = 4.97

(b) prob (even no heads) = 23/268 + 11/268 + 100/268 + 8/268 + 3/268

= 145/268

(c) prob (odd as heads) 7/268 + 26/268 + 61/268 + 12/268 + 5/268

= 121/268

14)

CLICK HERE FOR THE DIAGRAM

9)

Draw the pie chart diagram

radius is the same hence

(y – 2)² + (X – 3)² = (y + 4)² + (X – 5)² = (y + 1)² + (X + 2)²

Taking the first pair

Y² – 4y + 4 + x² – 6x + 9 = y² + 8y + 16 + x² – 10x + 25

– 6x – 4y + 13 = -10x+8y+41

4x – 12y = 28

X = 3y = 7——–(1)

Taking the second pair

Y² + 3y + 16+x² – 10x+25 = y²+ 2y + 1 + x²+ 4x + 4

-10x + 3y + 41 = 4x + 2y + 5

14x – 6y = 36

7x – 3y = 18———(2)

Eqn 2 minus Eqn 1

6x = 11

X = 11/6

Put this into Eqn (1)

11/6 – 3y = 7

3y = 11/6 – 7

3y = 11 – 42/6

3y = -31/6

y = -31/18

(a) coordinates of centre is (11/6, -31/18)

(b) Radius r = √(y-2)²+(x-3)²

r = √-31/18 -2)² + 11/6 – 3)²

r= √13.85 + 1.36

r = 3.9

(c) (X – 11/6)² + (y + 31/18)² = 3.9²

(X – 11/16)² + (y + 31/18)² = 15.21

2)

Log 3x – 3logx³+ 2 = 0

Log 3x – 3log3³/log3x + 2 = 0

Log3x – 3/log3x + 2 = 0

P – 3/p + 2 = 0 where P = log3x

P² – 3 + 2p = 0

P² + 2p – 3 = 0

(p + 3) ( p – 1) = 0

P = -3 OR p = 1

But log3x = p

when p = -3

Log3x = -3

X = 3-³ = 1/27

And when P = 1

Log3x = 1

X = 3¹ = 3

And X = 1/27 OR 3

3a)

U=x-2 hence x=u+2

therefore

x^2+5/(x-2)^4

=(u+2)^3+5/(u+2-2)^2

=(u+2)^3+5/u^4

3b)

(u+2)^3+5/u^4

=(u+2)^3/u^4+5/u^4

4)

sn=n/2[2a+(n-1)d]

s12=12/2[2a+11d]

s12=6(2a+11d]=168

2a+11d=28 eq—–(1)

multipply 1by2 to obtain

2a+4d=14 eq——(3)

subtract (3)from(2)

7d=14

d=2

sub for d in (1)

a+4=7

a+7-4-3

a=3

common difference d=2

first term a=3

5)

tabulate

X,y,d,d^2

A 8,6,2,4

B 5,3,2,4

C 1,4,-3,9

D 7,8,-1,1

E 2,5,-3,9

F 6,7,-1,1

G 3,1,2,4

H 4,2,2,4

Ed^2 =4+4+9+1+9+1+4+4

=36

r=1-6£d^2/n(n^2-1)

=1-6*36/8(8^2-1)=1-216/504

=1-0.43

=0.57

1)

X-3(12-2x+8)+4(30-5x-4)+3(-20-4)=24

X-3(20-2x)+4(26-5x)+3(-24)= -24

20x-2x^2+60+6z+104-20x-72=24

20x^2+6x-60+104-72+24=0

-2x^2+6x-4=0

Divide 2x by -2

x2^2-3x+2=0

x2^2-2x-x+2=0

x(x-2)-1(x-2)-0

(x-1)(x-2)=0

x-1 or x=2

6)

It follow that:

P(n) = 1/3 and p(k)¹ = 1 – 1/3 = 2/3

P(T) = 1/5 and P(T)¹ = 1- 1/5 = 4/5

Hence, probability that only one if the them will be solve the questions will be:

= (1/3 × 4/5) + (1/5 × 2/3)

= 4/15 + 2/15

= 6/15

= 2/5

8a)

m1 = 20kg

u1 = 8ms-1

m2 = 30kg

u2 = 50ms-1

(a) in same direction

m1u1 + m2u2 = (m1+m2)v

20 × 80 + 30 × 50 = (20+30)v

1600+1500 = 50v

3100/50 = 50/50

V = 62ms-1

8b)

M1=20kg

u1=80mls

m2=30kg

u2=50mls

v=?

M1u1+m2u2=v(m1+m2)

(20*80)+(30*(-50))=v(20+30)

1600-1500=50v

100=50v

v=100/50

v=2mls

7)

m = 3i – 2j ; n = 2i + 3j ; p = i + 6j

Therefore:

4(3i – 2j) +2(2i +3j) -3(-i + 6j)

12i – 8j + 4i + 6j + 3i – 18j

12i + 4i + 3i – 8j + 6j – 18j

19i = 20j

GOOD LUCK

- Neco 2019 Timetable for June/July Examination (SSCE)
- WAEC GCE 2018 [NOV/DEC] TIMETABLE
- Neco 2018 Mathematics Answers - May/June - Expo
- Waec 2019 May/June TimeTable
- Neco 2018 Further Mathematics Answers – May/June Expo
- Waec 2019 General Mathematics Obj And Answers –…
- Waec 2018 Mathematics Obj And Theory Answers - May/June Expo
- Nabteb 2019 TimteTable

Also don't forget to leave a comment Below.

« Waec 2018 Geography Obj And Theory Answers – May/June Expo
Waec 2018 Christian/Islamic Religious Studies Obj And Theory Answers – May/June Expo »

Waec 2018 Geography Obj And Theory Answers – May/June Expo

Waec 2018 Christian/Islamic Religious Studies Obj And Theory Answers – May/June Expo

Similar Posts in » Gidifans Examination Center (GEC)

I like the way you are making your transaction keep it up.

pls what

time will de questions come

pls what

time will de questions come

We are enjoying you. God bless.

Thanks for your service.

Please send d obj

Please send d obj

pls when will obj be released

Please can you make it more easily than this

Please can you make it earlier

I love gidifans all answers are correct

How can I get a correct link for subscription

i love your site, u guys are fantastic.

biology needed before d exams starts please,God will reward you for your services thanks

If i shud pay by what time will d answer arrive

Ibrahim idriss zanwa