2005 - WAEC Mathematics Past Questions and Answers - page 3
21
Solve the equation 2x - 3y = 22; 3x + 2y = 7
A
-5
B
-4
C
4
D
5
Ask EduPadi AI for a Detailed Answer
22
Solve the equation \(\frac{2y-1}{3} - \frac{3y-1}{4} = 1\)
A
-8
B
-13
C
13
D
19
Ask EduPadi AI for a Detailed Answer
23
If \(log_9x= 1.5\),find x
A
36
B
27
C
24.5
D
13.5
Ask EduPadi AI for a Detailed Answer
24
A sequence is given by \(2\frac{1}{2}, 5, 7\frac{1}{2}, .....\) if the nth term is 25, find n
A
9
B
10
C
12
D
15
Ask EduPadi AI for a Detailed Answer
25
Given that the root of an the equation \(2x^2 + (k+2)x+k=0\) is 2, find the value of k
A
-4
B
-2
C
-1
D
\(-\frac{1}{4}\)
Ask EduPadi AI for a Detailed Answer
26
Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7
A
4
B
5
C
6
D
7
Ask EduPadi AI for a Detailed Answer
27
What is the total surface area of a closed cylinder of height 10cm and diameter 7cm? [Take \(\pi = \frac{22}{7}\)]
A
77cm2
B
227cm2
C
297cm2
D
374cm2
Ask EduPadi AI for a Detailed Answer
28
An arc of a circle of radius 14cm subtends angle 300o at the center. Find the perimeter of the sector formed by the arc
A
14.67cm
B
42.67cm
C
101.33cm
D
543.33cm
Ask EduPadi AI for a Detailed Answer
29
which of the following statements describes the locus of a point R which moves in a plane such that its equidistant from two intersecting lines?
A
the bisector of the angle formed by the lines
B
the point of intersection of the two lines
C
A cone, with two intersecting lines as slant height
D
A circle, with the point of intersection of the two lines as the center
Ask EduPadi AI for a Detailed Answer
30
P = {3, 9, 11, 13} and Q = {3, 7, 9, 15} are subset of the universal set ξ = {1, 3, 7, 9, 11, 13, 15} find PI ∩ QI
A
{3, 9}
B
{5, 7, 9}
C
{1}
D
{1, 11}
Ask EduPadi AI for a Detailed Answer