Question 21
be negative?
Options
A)
B)
C)
D)
The correct answer is C.
Explanation:
For what value of will be negative?
Question 22
Options
A) 300°
B) 100°
C) 120°
D) 150°
The correct answer is D.
Explanation:
Sum of interior angles = 360°
i.e 3x + 2x + 2x + x + 4x = 360°
12x = 360
x =
x = 30°
x + c = 180
30° + c = 180
c = 180 - 30
c = 150°
Question 23
Multiply
and leave your answers in standard form
Options
A)
B)
C)
D)
The correct answer is C.
Explanation:
Question 24
If
Options
A)
B)
C)
D)
The correct answer is B.
Explanation:
Question 25
In what number base is the addition 465 + 24 + 225 = 1050?
Options
A) ten
B) nine
C) eight
D) seven
The correct answer is D.
Question 26
Simplify
Options
A)
B)
C)
D)
The correct answer is D.
Explanation:
From numerator
From denominator
Question 27
If
Options
A) 18
B) 56
C) 62
D) 80
The correct answer is C.
Explanation:
Question 28
If
Options
A) -2
B) -1
C) 1
D) 2
The correct answer is D.
Explanation:
Question 29
A sales boy gave a change of
Calculate his percentage error
Options
A)
B)
C)
D)
The correct answer is B.
Explanation:
Error
Actual value
error =
=
Question 30
Four oranges sell for ₦x and three mangoes sell for ₦y. Olu bought 24 oranges and 12 mangoes. How much did he pay in terms of x and y?
Options
A) ₦(94x + 6y)
B) ₦(6x + 4y)
C) ₦(24x + 12y)
D) ₦(12x + 24y)
The correct answer is B.
Explanation:
4 oranges sell for ₦x, 1 orange will sell for
24 oranges will sell for: = ₦6x
3 mangoes sell for ₦y, 1 mango will sell for
12 mangoes will sell for = 4₦y
Question 31
Simplify:
Options
A)
B)
C)
D)
The correct answer is C.
Explanation:
Question 32
Solve the inequality:
Options
A)
B)
C)
D)
The correct answer is D.
Question 33
If
Options
A)
B)
C)
D)
The correct answer is C.
Explanation:
Substitute and
Question 34
If
Options
A) 3
B) 2
C) 1
D) 5
The correct answer is A.
Explanation:
......(ii)(multiply by 2)
......(iii)
.....(iv) add (iii) and (iv)
Substitute into equation (iii)
Question 35
Given that
the subject of the equation
Options
A)
B)
C)
D)
The correct answer is D.
Explanation:
(cross multiply)
3 cube root both side
Question 36
A chord is 2cm from the centre of a circle. If the radius of the circle is 5cm, find the length of the chord
Options
A) 2
cm
B)
cm
C) 2
cm
D)
cm
The correct answer is A.
Explanation:
From
52 = 22 + MQ2
25 = 4 + MQ2
25 - 4 = MQ2
21 = MQ2
MQ2 = 21
MQ2 =
Length of chord
cm
Question 37
A cube and cuboid have the same base area. The volume of the cube is 64 cm3 while that of the cuboid is 80 cm3. Find the height of the cuboid
Options
A) 1 cm
B) 3 cm
C) 5 cm
D) 6 cm
The correct answer is A.
Question 38
If sin x =
90°, find the value of (cos x - tan x)
Options
A)
B)
C)
D)
The correct answer is C.
Explanation:
sin x =
0° x 90°, (cos x - tan x)
AC2 = AB2 + BC2
132 = 52 + BC2
169 - 25 + BC2
169 - 25 = BC2
144 = BC2
cos x = =
BC =
BC = 12
tan x =
BC = 12
cos x - tan x =
Question 39
An object is 6m away from the base of a mast. The angle of depression of the object from the top of the mast is 50°, Find, correct to 2 decimal places, the height of the mast
Options
A) 8.60m
B) 7.51m
C) 7.15m
D) 1.19m
The correct answer is C.
Explanation:
tan 50° =
h = 6 tan 50°
= 6 × 1.1917
= 7.1505
= 7.15
Question 40
The bearing of Y from X is 060° and the bearing of Z from Y = 060°. Find the bearing of X from Z
Options
A) 300°
B) 240°
C) 180°
D) 120°