Earboard Logo

Welcome, Guest: Join Earboard / LOGIN! / Advertise / Join Earboard Affiliate /Contacts / News
Stats: 3891 members, 31659 topics. Date: Tuesday, 16th October 2018


HOME NEWSLETTER GENERAL NEWS TECHNOLOGY EDUCATION AFFILIATE
Click Here to Receive Our Next Post via Email ...
 

WAEC 2017 Mathematics Theory and Obj Answers

Vocational Training Is The Answer To Unemployment Among The Youths / A Letter to My Sister Giving Her Three Reasons Why I dislike My New School / Reasons Why Teaching Is A Lucrative Profession /

(15 ) (Reply) (Go Down)

WAEC 2017 Mathematics Theory and Obj Answers by : 12:00 am On April 20, 2017

WAEC 2017 Mathematics Theory and Obj Answers

Click Here to Enter Password

MATHS OBJ:
1-10: CBBCCACBBC
11-20: CACBAAAADB
21-30: BBADBCCACB
31-40: BBCACBDADA
41-50: DDACCCDDCB

1a)
(y-1)log4=ylog16
log4^(y-1)=log16^y
log4^(y-1)=log4^2*y
y-1=2y
y=-1
1b)Distance =speed*time
let the time of the walk be x hours
=>4*(x 0.5)=5x
Because 30 minutes 0.5hours
4x 2=5x
5x-4x=2
x=2hours
=>5*2
=10km

2a)
2/3(3x-5)-3/5(2x-3)=3
2/3(3x-5)-3/5(2x-3)=3
lcm=15
=>(6x-10)/3-(6x-9)/9=3
Multiply both sides by 15
15(6x-10)/3-15(6x-9)5=15(3)
30x-50-3(6x-9)=45
30x-50-18x 27=45
12x-23=45
12x=45 23
x=68/12
x=5(2/3)
(2b)
=180-n-88=92-n
Also UTQ=180cm--(sum of 80 92-n 180-m=180(sum of 352-n-m=180
-n-m=180-352
-n-m=-172
-(n m)=-172
m n=172degrees

3a)
DRAW THE DIAGRAM
tanx=50/x
tan66.4=50/x
x=50/2.289
x=21.844m
x=22m
3b)
DRAW THE DIAGRAM
Area of=1/2*10*h=45
=>5h=45
h=45/5
h=9cm
Area of parallelogram=L*h
=9*6
=54cm^2
Therefore the area of QTUS=54 45
=99cm

4a)
Tnth=a (n-1)d
Snth=n/2[2a (n-1)d] T6th=37
S6th=147
T6th=>37=a (6-1)d
=>37=a 5d-----(i)
S6th=>147=6/2[2a 96-1)d
=>147=3(2a 5d)
147=6a 15d------(ii)
Therefore a 5d=37----(i)
6a 15d=147-----(ii)
divide equation ii by 3
2a 5d=49--(ii)
multiply eq i by ii
=>a 10d=74
a 5d=49
5d/5=25/5
therefore d=5
substitute for d in eq i
a 5d=37
a 5(5)=37
a=37-25
a=12
The first term=12
4b)
Sn=n/2[2a (n-1)d] S15=15/2[2(12) (15-1)5] =15/2(24 (14*5)
=7.5(24 70)
=705

5a)
Let bag =B
shoe=S
U=120
n(BnS)=45,
n(S)=x 11
n(B)=x
n(SnB^1)=x 11-45
=x-34
n(BnS^1)=x-45
5b)
DRAW THE VENN DIAGRAM
x-45 45 x-34=120
2x-34=120
2x=120 34
2x/2=154/2
x=77
=11 x
=11 77=88
Therefore 88customers bought shoes
5c)
Pr(bag)=n(B)/U=77/120

(8a)
Tabulate:
X = 1,2,3,4,5
F = m 2, m-1, 2m-3, m 5, 3m-4 = 8m - 1‎
Fx = m 2, 2m-2, 6m-9, 4m 20, 15m-20 = 28m - 9‎
But x̄ ( this symbol (x̄) means X bar)
= 75/23‎
ΣFx / Σf = 75/23 = 28m - 9/8m-1
75/23 = 28m - 9/8m - 1
Cross multiply
75(8m-1) = 23(28m-9)
600m - 75 = 644m - 207
-75 207 = 644m - 600m
132 = 44m
M = 3
8b)
In tabular form
X = 1,2,3,4,5
F = 5,2,3,8,5
C*m Freq= 5,7,10,18,23
Q1 = (N 1/4) = (23 1/4)
= 6
Q3 = (3N 1/4) = (3*23 1/4)
= 18
Inter quarter range = Q3 - Q1
= 18-6
= 12
8bii)
Pr. (at least 4 mark)
= 8 3 2 5/23
= 18/23‎

10)
Sin x = 5/13
Using pythagoras rule
M^2 = 13^2 - 5^2 (^ means Raise to power)
M^2 = 169 - 25
M ^2 = 144
M = √144
M = 12
Hence:Cos x - 2sin x / 2tan x
12/13 - 2(5/13) / 2(5/12)
= 12/13 - 10/23 / 5/6
FIND LCM
= 12 - 10/13 / 5/6= 12/65
10b)
Draw a triangle LACB
in triangle LCB
Hyp^2 = Opp^2 Adj^2
12^2 = 9.6^2 |CB|^2
144 = 92.16 = |CB|^2
144 – 92.16 = |CB|^2
51.84 = |CB|^2
therefore, |CB| = √51.84
|CB| = 7.2m
|AC| |CB| =|AB|
|AC| 7.2m = 10m
|AC| = 10m – 7.2m
|AC| = 2.8m
In triangle LCA
Hyp^2 = Opp^2 Adj^2
|LA|^2 = |AC|^2 |LC|^2
|LA|^2 = 2.8^2 9.6^2
|LA|^2 = 7.84 92.16
|LA|^2 =100
|LA| = √100
|LA| = 10m
10bii)
in triangle LCA
sinθ = Opp/Hyp
sinθ = |LC|/|LA|
sinθ = 9.6/10
sinθ = 0.96
θ = sin^-1 (0.96)
θ = 73.74

13ai)
given
x(*)y=x y/2
3(*)2/5=3 2/5/2
=(15 2/5)*1/2
=17/5*1/2
=17/10= 1,7/10
13aii)
8(*)y=8^1/4
=8 y/2 =33/4
32 4y=66
4y=66-32
4y=34
y=34/4
y=17/2
y=8^1/2
13b)
given DABC
AB=(^-4/6) and AC =(3/^-8)
so AP =1/2(^-4/6)
AP=(^-2/3)
hence
CP = CA AP
CP= -(3/^8) (^-2/3)
CP = (^-5/11)

9ai)
DRAW THE DIAGRAM
9aii)
RTS=?
PTS=180-65(Sum of9b)
Therefore tita=180-52-32-70(sum of < in a triangle)
tita=20degrees
Therefore LWYZ=20 degrees

Take Our Free Runz: WAEC 2017 Mathematics Theory and Obj Answers will be posted here for free but 60 minutes after exam starts.
Take Our Paid Runz: With N500 we will send you the password to view the answers 6Hrs before exam starts. Call 09067385575 for payment details

Refresh this page 60 minutes after exam starts for free answers.
Click Here to Refresh

0

Publication author

offline 2 months

Editor

7

I am the brain behind Earboard.com

Comments: 41Publics: 581Registration: 13-02-2017

15 comments

  1. immanuella says:

    pls math question and answer 2morrow

    0
  2. Anonymous says:

    please don’t waste time to post 2morow answers please

    0
  3. Dammy says:

    Pls I nid it pls 4 free plssssssss

    0
  4. adex says:

    pls, send it fast ooooo

    0
  5. A B Y says:

    Please Reduce The Time For Posting Free Answer

    0

Comments are closed.

(15 ) (Reply)

Vocational Training Is The Answer To Unemployment Among The Youths / A Letter to My Sister Giving Her Three Reasons Why I dislike My New School / Reasons Why Teaching Is A Lucrative Profession /

 

(Go Up)


Sections: News (1) Technology Education (2)

Links: (0) (1) (2) (3) (4) (5) (6) (7) (8) (9)

Earboard - Copyright @ 2016 - 2018 George Gosmooth. All rights reserved. See How To Advertise.
Disclaimer: Every member is solely responsible for anything that he/she posts or uploads on Earbaord.

%d bloggers like this: