2016 - JAMB Mathematics Past Questions and Answers - page 2
11
If line p = 5x + 3 is parallel to line p = wx + 5. Find the value of w.
A
7
B
3
C
6
D
5
correct option: d
P = 5x + 3, P = wx + 5
M1 = 5, M2 = w
M1 = M2 (parallel lines)
w = 5
Users' Answers & CommentsM1 = 5, M2 = w
M1 = M2 (parallel lines)
w = 5
12
Evaluate \(\int\)(cos4x + sin3x)dx
A
sin4x - cos3x + k
B
sin4x + cos3x + k
C
\(\frac{1}{4}\)sin4x - \(\frac{1}{3}\)cos3x + k
D
\(\frac{1}{4}\)sin4x + \(\frac{1}{3}\)cos3x + k
correct option: c
Users' Answers & Comments13
If x10 = 235. Find x
A
15
B
12
C
14
D
13
14
A
24o
B
39o
C
32o
D
36o
correct option: c
xo + 36o + 54o + 28o + 90o + 120o = 360o
x + 328o = 360o
x = 360o - 328o
x = 32o
Users' Answers & Commentsx + 328o = 360o
x = 360o - 328o
x = 32o
15
Calculate the range of 20, -6, 25, 30, 21, 28, 32, 33, 34, 5, 3, 2, and 1.
A
32
B
36
C
33
D
40
16
A
17
B
22
C
20
D
16
17
Factorize k2 - 2kp + p2.
A
(k +p)2
B
(k - p)2
C
k2 + p2
D
k2 - p2
18
Calculate the perimeter of a sector of a circle of raduis 12cm and angle 60o.
A
(12 + 4\(\pi\))cm
B
(24 + 4\(\pi\))cm
C
(12 + 6\(\pi\))cm
D
(24 + 6\(\pi\))cm
correct option: b
Perimeter = 2r + \(\frac{0}{360}\) x 2\(\pi\)r
= 2(12) + \(\frac{60}{360}\) x 2 x \(\pi\) x 12
= (24 + 4\(\pi\))cm
Users' Answers & Comments= 2(12) + \(\frac{60}{360}\) x 2 x \(\pi\) x 12
= (24 + 4\(\pi\))cm
19
\(\begin{array}{c|c}
Marks & 2 & 3 & 4 \\ \hline
Frequency & 4 & 4 & y
\end{array}\)
The table above shows the frequency distribution of marks obtained by a group of students. If the total mark is 48, find the value of y.
Marks & 2 & 3 & 4 \\ \hline
Frequency & 4 & 4 & y
\end{array}\)
The table above shows the frequency distribution of marks obtained by a group of students. If the total mark is 48, find the value of y.
A
6
B
8
C
7
D
5
correct option: c
(2 x 4) + (3 x 4) + (4 x y) = 48
8 + 12 + 4y = 48
4y = 48 - 20
\(\frac{4y}{4}\) = \(\frac{28}{4}\)
y = 7
Users' Answers & Comments8 + 12 + 4y = 48
4y = 48 - 20
\(\frac{4y}{4}\) = \(\frac{28}{4}\)
y = 7
20
Given U = {xx is a positive integer less than 15} and P = {xx is even number from 1 to 14}. Find the compliment
A
{1, 3, 5, 7, 9, 11, 13, 15}
B
{2, 3, 5, 7, 9, 11, 13}
C
{1, 3, 5, 7, 9, 11, 13}
D
{2, 3, 5, 7, 11, 15}
correct option: c
u = {1, 2, 3, 4, 5......14}
p = {2, 4, 6, 8, 10, 12, 14}
p1 = {1, 3, 5, 7, 9, 11,13}
Users' Answers & Commentsp = {2, 4, 6, 8, 10, 12, 14}
p1 = {1, 3, 5, 7, 9, 11,13}