* Neco 2018/19 Mathematics Answer | NECO 2018 Mathematics Obj And Essay Answer – June/July Expo | 2018/19 Neco Mathematics Answer*

**2018/2019 NECO Mathematics Answer Exam Expo, Neco 2018 Mathematics Questions And Answers Expo Runz Now Posted For Free
**MATHEMATICS OBJ:

1-10: CDAAEABAEC

11-20:ACDDCDCDAC

21-30: CEBDEDCBBC

31-40: CBEECCBDCC

41-50: DDCBCDDBBA

51-60:BCEACBBCEE

————————————————————–

THEORY

————————————————————–

(1a)

Log10(20x – 10) – log10(x+3) = log10^5

Log10(20x-10/x+3)= log10^5

20x – 10/x + 3 = 5

Cross multiplying

20x – 10 = 5(x + 3)

5(4x – 2) = 5(x + 3)

4x – 2 = X + 3

4x – x = 3+2

3x = 5

X = 5/3 OR 1 whole no 2/3

(1b)

Let actual amount be #X

15% of #x = #600

15x/100 = 600

X = (100/15)*600

X = 100*40

X = 4,000

Actual amount = #4,000

================================

2

(2a)

(X^2 Y^-3 Z)^3/4/X^-1 Y^4 Z^5

= (X^2)^3/4/X^-1 * (Y^-3)^3/4/Y^4 * Z^3/4/Z^5

= X^3/2/X^-1 * Y^-9/4/Y^4 * Z^3/4/Z^5

=X^3/2+1 * Y^-9/4-4 * Z^3/4-5

=X^5/2 * Y^-25/4 * Z^-17/4

=X^10/4 * Y^-25/4 * Z^-17/4

=(X^10/Y^25 Z^17)^1/4

(2b)

?2/k + ?2 = 1/k – ?2

Multiply both sides by (k+?2)(k-?2)

?2(k-?2) = k+?2

?2k-?2 = k+?2

?2k-k = 2+?2

K(?2 -1) = 2+?2

K = 2+?2/?2-1

K = -(2+?2)/1-?2

Rationalizing

K = -(2+?2) * 1+?2/1-?2

K = -(2+?2)(1+?2)/1 – 2

K = (2+?2)(1+?2)

K = 2+2?2 + ?2+2

K = 4+3?2

================================

(3)

V = Mg?1 – r²

Square both sides

V² = m²g²(1-r²)

V²/m²g² = 1-r²

r² = 1 – v²/m²g²

r = ?1-(v/mg)²

If v = 15, m = 20, and g = 10

r = ?1 – (15/20*10)²

r = ?1 – (0.075)²

r= ?(1.075)(0.925)

r = ?0.994375

r = 0.9972

================================

(4)

Draw the diagram

(i) Arc length = Tita/360*2?r

= 72/360*2*22/7*14

=1/5*44*2

=88/5

=17.6cm

(ii) Perimeter of Sector = arc length +2r

=17.6+2(14)

=17.6+28

=45.6cm

(iii) Area of sector = Tita/360*?r²

=72/360*22/7*14/1*14/1

=1/5*22*2*14

=616/5

=123.2cm2

================================

(5a)

Mode = mass with highest frequency = 35kg

Median is the 18th mass

= 40kg.

(5b)

In a tabular form

Under Masses(x kg)

30,35,40,45,50,55

Under frequency(f)

5,9,7,6,4,4

Ef = 35

Under X-A

-10, -5, 0, 5, 10, 15

Under F(X-A)

-50, -45, 0, 30, 40, 60

Ef(X – A) = 35

Mean = A + (Ef(X – A)/Ef)

= 40 + 35/35

= 40 + 1

= 41kg

================================

6

================================

(8)

x=a+by(eqi)

when y=5 and x=19

19=a+5b(eqii)

when y=10 and x=34

34=a+10b(eqiii)

solving eqii and eqiii

a+10b=34

a+5b=19

=>5b=15

b=15/5=3

putting b=3 in eqii

19=a+5(3)

19=a+15

a=19-15

a=4

(8i)

Putting a=4 and b=3 in eqi

x=4+3y

This is the relationship between xand y

(8ii)

When y=7

x=4+3(7)

x=4+21

x=25

================================

(10a)

Obtuse

105 + reflex

Reflex

=255°

Now 2w = reflex

2w =255°

W = 255/2 =127.5°

Also 2x = obtuse

2x = 105°

X = 105/2 = 52.5°

Now EDF = y(base angles of an isosceles triangle)

BED=X=52.5°(angles in the same segment)

EFD+EDF=BED (sum of interior angles of a triangle equal exterior angle)

Y+y = 52.5°

2y = 52.5°

Y = 52.5°/2

=26.25°

(10b)

Draw the diagram

Opp/adj = TanR

|TB|/|BR| = TanR

100/|BR| = Tan60°

|BR| = 100/tan60

|BR| = 100?3

|BR| = 100?3 * ?3/?3

=100?3/3m OR 57.7m

=============================

11a)

x+y/2 =11

x+y= 11*2

x+y= 22 —(1)

x-y= 4 —-(11)

x+y = 22—-(1)

–

x-y= 4—-(11)

____________

2y = 18

y= 18/2

y=9

Substitute y=9 in equ 1

x+9=22

x=22-9

x=13

x=13, y=9

x+y= 13+9= 22

Sum of the two number

(11b)

(6x + 3) dx

(6x + 3)dx

(6x +3)^6 – (6x + 3)^1

(6 x + 3)^5

(7776x^5 + 243)

38,880x/6 + 243

6480 x^6 + 243x

9(720x^6 + 27x)

(11c)

y = x² + 5x – 3 (x = 2)

y = 2² + 5(2) – 3

y = 4 + 10 – 3

y = 14 – 3

y = 11

Gradient of the curve = 11

2018/2019 NECO Biology Practical is available here. Are you searching for the **2018 NECO Mathematics** online? Then you’re on the right page. This page will provide you with the 2018 NECO **Mathematics** Questions And Answers.

*Here Is The Verified NECO 2018/2019 Mathematics Questions And Answers – June/July Exam Expo Runz On: galantwap.com.ng*

**Date: Monday 4th June 2018**

Time: 10:00am – 2:30Pm

## NECO mathematics Expo

## Direct SMS: N1200 MTN CARD

(In This Package, We’ll Send Answers To Your Phone Inbox Via Text Msg/SMS Before Exam Starts)

## Password: N1000 MTN CARD

(In This Package We’ll Send You The Password And Link 6Hr before Exam And Answers Will Show B4 Exam Starts Sometimes Answers Comes 12 Hours.)

## Whatsapp: N1000 MTN CARD

(In This Package, We Will Send Questions And Answers Send To You On Whatsapp Before Exam Commencement Sometimes Answers Comes 6 Hours.)

## How To Make Payment

– SEND MTN CARD

– SUBJECT NAME

– PHONE NUMBER

– EXAM NAME (e.g Neco) TO **09033696908**

**
**
For Example:

2568414985342587, Biology Practical, 09033696908, NECO 2018

**OUR ANSWER LINK: ANSWER PAGE**

Password: ****

## Click Here To Message Us On WhatsApp For Your Answers

## Click Here To Text Message As SMS For Your Answers

**Please Don’t Call, Just Send Us Text Message Or WhatsApp Message, We Might Switch Off/Divert Our Phone Number Because Of Too Many Calls, We Are Always Busy. **

**
****No Free Answer will be Posted here at All, So Subscribe Now and Get Your Answer A Day Or latest 6 hours Before Exam, Keep your recharge cards safe until you receive a confirmation message.**

**Also Read:** Neco, Neco Mathematics Expo, Neco 2018 Mathematics Answers, Neco 2018 Mathematics Expo, 2018 Neco Mathematics Questions, Neco 2018 Mathematics Questions And Answers Expo Runz, 2018/2019 NECO Mathematics Expo, 2018/2019 Neco Mathematics Questions And Answers, Exam Expo, Examloaded, Expoloaded, 042series, Exampass, Ceewap, Gidifans, Ceebook Answers,

Expotab, Naijagoodies, Exam Runz site

NECO ssce 2018 Mathematics expo answers, Ssce 2018 Mathematics objective and essay Expo answers now available, nov/dec Mathematics theory Answers for 2018, Mathematics obj and theory Questions NECO Ssce Expo Answers Here, Free wassce Mathematics objective, essay & theory correct Expo 2018 answers Runz NECO Mathematics, NECO Ssce 2018 Free Mathematics essay, obj and theory Questions and Answers Expo for NECO Mathematics Paper 1 and Paper 2 objective and essay Questions and Answers Expo Now Posted, Free Mathematics objective ans for internal ssce, see NECO ssce expo Mathematics obj and theory, essay questions for free, loadedexpo correct wassce Economics ans, sure NECO ssce Mathematics objective answers runz runs expo free real and correct NECO ssce 2018 nov/dec Mathematics free expo runz runs ans answers online for free see free answers online, 2018 Verified NECO Free Ssce Mathematics Obj and theory Answers have been posted REAL NECO SSCE Mathematics QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2018 WASSCE Mathematics (Expo) NECO 2018 certified runs Mathematics questions and answers NECO SSCE November/December 2018 Mathematics THEORY / ESSAY / OBJ QUESTION AND EXPO I need NECO ssce free expo site, how can I get WAEC Mathematics answer for free, NECO 2018 Mathematics essay, Objective And Theory Question and Answer Now Posted, Real 2018/2019 nov/dec wassce NECO Mathematics objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2018 NECO Mathematics theory, essay and obj NECO Mathematics expo website, NECO ssce Mathematics live cheats, sure November/December NECO SSCE 2018 Mathematics original objective, theory and essay questions and answer now available here, 100% NECO ssce Mathematics expo, 2018 wassce Mathematics obj, essay and theory runz now posted, correct NECO ssce Mathematics objective, essay (theory) answer now ready, free 2018 wassce Mathematics obj, theory and essay best expo site Neco ssce Mathematics questions and answers, password for certified WAEC ssce Mathematics essay theory obj expo, how to get/ where to get wassce Mathematics theory, essay and objective expo answer direct to my phone as text message, trusted NECO ssce Mathematics questions and answer, i need NECO Ssce nov/dec Mathematics essay theory objective obj Expo 2018 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,

MATHEMATICS OBJ:

1-10: CDAAEABAEC

11-20:ACDDCDCDAC

21-30: CEBDEDCBBC

31-40: CBEECCBDCC

41-50: DDCBCDDBBA

51-60:BCEACBBCEE

————————————————————–

THEORY

————————————————————–

(1a)

Log10(20x – 10) – log10(x+3) = log10^5

Log10(20x-10/x+3)= log10^5

20x – 10/x + 3 = 5

Cross multiplying

20x – 10 = 5(x + 3)

5(4x – 2) = 5(x + 3)

4x – 2 = X + 3

4x – x = 3+2

3x = 5

X = 5/3 OR 1 whole no 2/3

(1b)

Let actual amount be #X

15% of #x = #600

15x/100 = 600

X = (100/15)*600

X = 100*40

X = 4,000

Actual amount = #4,000

================================

2

(2a)

(X^2 Y^-3 Z)^3/4/X^-1 Y^4 Z^5

= (X^2)^3/4/X^-1 * (Y^-3)^3/4/Y^4 * Z^3/4/Z^5

= X^3/2/X^-1 * Y^-9/4/Y^4 * Z^3/4/Z^5

=X^3/2+1 * Y^-9/4-4 * Z^3/4-5

=X^5/2 * Y^-25/4 * Z^-17/4

=X^10/4 * Y^-25/4 * Z^-17/4

=(X^10/Y^25 Z^17)^1/4

(2b)

?2/k + ?2 = 1/k – ?2

Multiply both sides by (k+?2)(k-?2)

?2(k-?2) = k+?2

?2k-?2 = k+?2

?2k-k = 2+?2

K(?2 -1) = 2+?2

K = 2+?2/?2-1

K = -(2+?2)/1-?2

Rationalizing

K = -(2+?2) * 1+?2/1-?2

K = -(2+?2)(1+?2)/1 – 2

K = (2+?2)(1+?2)

K = 2+2?2 + ?2+2

K = 4+3?2

================================

(3)

V = Mg?1 – r²

Square both sides

V² = m²g²(1-r²)

V²/m²g² = 1-r²

r² = 1 – v²/m²g²

r = ?1-(v/mg)²

If v = 15, m = 20, and g = 10

r = ?1 – (15/20*10)²

r = ?1 – (0.075)²

r= ?(1.075)(0.925)

r = ?0.994375

r = 0.9972

================================

(4)

Draw the diagram

(i) Arc length = Tita/360*2?r

= 72/360*2*22/7*14

=1/5*44*2

=88/5

=17.6cm

(ii) Perimeter of Sector = arc length +2r

=17.6+2(14)

=17.6+28

=45.6cm

(iii) Area of sector = Tita/360*?r²

=72/360*22/7*14/1*14/1

=1/5*22*2*14

=616/5

=123.2cm2

================================

(5a)

Mode = mass with highest frequency = 35kg

Median is the 18th mass

= 40kg.

(5b)

In a tabular form

Under Masses(x kg)

30,35,40,45,50,55

Under frequency(f)

5,9,7,6,4,4

Ef = 35

Under X-A

-10, -5, 0, 5, 10, 15

Under F(X-A)

-50, -45, 0, 30, 40, 60

Ef(X – A) = 35

Mean = A + (Ef(X – A)/Ef)

= 40 + 35/35

= 40 + 1

= 41kg

================================

6

================================

(8)

x=a+by(eqi)

when y=5 and x=19

19=a+5b(eqii)

when y=10 and x=34

34=a+10b(eqiii)

solving eqii and eqiii

a+10b=34

a+5b=19

=>5b=15

b=15/5=3

putting b=3 in eqii

19=a+5(3)

19=a+15

a=19-15

a=4

(8i)

Putting a=4 and b=3 in eqi

x=4+3y

This is the relationship between xand y

(8ii)

When y=7

x=4+3(7)

x=4+21

x=25

================================

(10a)

Obtuse

105 + reflex

Reflex

=255°

Now 2w = reflex

2w =255°

W = 255/2 =127.5°

Also 2x = obtuse

2x = 105°

X = 105/2 = 52.5°

Now EDF = y(base angles of an isosceles triangle)

BED=X=52.5°(angles in the same segment)

EFD+EDF=BED (sum of interior angles of a triangle equal exterior angle)

Y+y = 52.5°

2y = 52.5°

Y = 52.5°/2

=26.25°

(10b)

Draw the diagram

Opp/adj = TanR

|TB|/|BR| = TanR

100/|BR| = Tan60°

|BR| = 100/tan60

|BR| = 100?3

|BR| = 100?3 * ?3/?3

=100?3/3m OR 57.7m

=============================

11a)

x+y/2 =11

x+y= 11*2

x+y= 22 —(1)

x-y= 4 —-(11)

x+y = 22—-(1)

–

x-y= 4—-(11)

____________

2y = 18

y= 18/2

y=9

Substitute y=9 in equ 1

x+9=22

x=22-9

x=13

x=13, y=9

x+y= 13+9= 22

Sum of the two number

(11b)

(6x + 3) dx

(6x + 3)dx

(6x +3)^6 – (6x + 3)^1

(6 x + 3)^5

(7776x^5 + 243)

38,880x/6 + 243

6480 x^6 + 243x

9(720x^6 + 27x)

(11c)

y = x² + 5x – 3 (x = 2)

y = 2² + 5(2) – 3

y = 4 + 10 – 3

y = 14 – 3

y = 11

Gradient of the curve = 11

2018/2019 NECO Biology Practical is available here. Are you searching for the **2018 NECO Mathematics** online? Then you’re on the right page. This page will provide you with the 2018 NECO **Mathematics** Questions And Answers.

*Here Is The Verified NECO 2018/2019 Mathematics Questions And Answers – June/July Exam Expo Runz On: galantwap.com.ng*

**Date: Monday 4th June 2018**

Time: 10:00am – 2:30Pm

Time: 10:00am – 2:30Pm

## NECO mathematics Expo

## Direct SMS: N1200 MTN CARD

(In This Package, We’ll Send Answers To Your Phone Inbox Via Text Msg/SMS Before Exam Starts)

## Password: N1000 MTN CARD

(In This Package We’ll Send You The Password And Link 6Hr before Exam And Answers Will Show B4 Exam Starts Sometimes Answers Comes 12 Hours.)

## Whatsapp: N1000 MTN CARD

(In This Package, We Will Send Questions And Answers Send To You On Whatsapp Before Exam Commencement Sometimes Answers Comes 6 Hours.)

## How To Make Payment

– SEND MTN CARD

– SUBJECT NAME

– PHONE NUMBER

– EXAM NAME (e.g Neco) TO **09033696908**

For Example:

2568414985342587, Biology Practical, 09033696908, NECO 2018

**OUR ANSWER LINK: ANSWER PAGEPassword: ******

## Click Here To Message Us On WhatsApp For Your Answers

## Click Here To Text Message As SMS For Your Answers

**Please Don’t Call, Just Send Us Text Message Or WhatsApp Message, We Might Switch Off/Divert Our Phone Number Because Of Too Many Calls, We Are Always Busy. **

**No Free Answer will be Posted here at All, So Subscribe Now and Get Your Answer A Day Or latest 6 hours Before Exam, Keep your recharge cards safe until you receive a confirmation message.**

**Also Read:** Neco, Neco Mathematics Expo, Neco 2018 Mathematics Answers, Neco 2018 Mathematics Expo, 2018 Neco Mathematics Questions, Neco 2018 Mathematics Questions And Answers Expo Runz, 2018/2019 NECO Mathematics Expo, 2018/2019 Neco Mathematics Questions And Answers, Exam Expo, Examloaded, Expoloaded, 042series, Exampass, Ceewap, Gidifans, Ceebook Answers,

Expotab, Naijagoodies, Exam Runz site

NECO ssce 2018 Mathematics expo answers, Ssce 2018 Mathematics objective and essay Expo answers now available, nov/dec Mathematics theory Answers for 2018, Mathematics obj and theory Questions NECO Ssce Expo Answers Here, Free wassce Mathematics objective, essay & theory correct Expo 2018 answers Runz NECO Mathematics, NECO Ssce 2018 Free Mathematics essay, obj and theory Questions and Answers Expo for NECO Mathematics Paper 1 and Paper 2 objective and essay Questions and Answers Expo Now Posted, Free Mathematics objective ans for internal ssce, see NECO ssce expo Mathematics obj and theory, essay questions for free, loadedexpo correct wassce Economics ans, sure NECO ssce Mathematics objective answers runz runs expo free real and correct NECO ssce 2018 nov/dec Mathematics free expo runz runs ans answers online for free see free answers online, 2018 Verified NECO Free Ssce Mathematics Obj and theory Answers have been posted REAL NECO SSCE Mathematics QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2018 WASSCE Mathematics (Expo) NECO 2018 certified runs Mathematics questions and answers NECO SSCE November/December 2018 Mathematics THEORY / ESSAY / OBJ QUESTION AND EXPO I need NECO ssce free expo site, how can I get WAEC Mathematics answer for free, NECO 2018 Mathematics essay, Objective And Theory Question and Answer Now Posted, Real 2018/2019 nov/dec wassce NECO Mathematics objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2018 NECO Mathematics theory, essay and obj NECO Mathematics expo website, NECO ssce Mathematics live cheats, sure November/December NECO SSCE 2018 Mathematics original objective, theory and essay questions and answer now available here, 100% NECO ssce Mathematics expo, 2018 wassce Mathematics obj, essay and theory runz now posted, correct NECO ssce Mathematics objective, essay (theory) answer now ready, free 2018 wassce Mathematics obj, theory and essay best expo site Neco ssce Mathematics questions and answers, password for certified WAEC ssce Mathematics essay theory obj expo, how to get/ where to get wassce Mathematics theory, essay and objective expo answer direct to my phone as text message, trusted NECO ssce Mathematics questions and answer, i need NECO Ssce nov/dec Mathematics essay theory objective obj Expo 2018 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,