Factorize \( x^2 β 2x β 15 \)
- A. (x + 3)2
- B. (x + 5)(x β 3)
- C. (x β 5)2
- D. (x β 5)(x + 3)
The extension of a stretched string is directly proportional to its tension. If the extension produced by a tension of 8 Newtonβs is 2cm, find the extension produced by a tension of 12 newtonβs.
- A. 2
- B. 1
- C. 0
- D. 3
Given that A = {1, 5, 7}
B = {3, 9, 12, 15}
C = {2, 4, 6, 8}
Find (A βͺ B) βͺ C
- A. {1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15}
- B. {1, 2, 3, 5, 6, 8, 12, 15}
- C. {2, 4, 5, 9, 12, 15}
- D. {1, 5, 6, 7, 8, 9, 12, 15}
Find at which rate per annum simple interest N525 will amount to N588 in 3 years.
- A. 3%
- B. 2%
- C. 5%
- D. 4%
Make x the subject of the equation
s = 2 + \(\frac{t}{5} \)(x + β
y)
- A. x = 5[(s β 2) Γ· t] - 3/5y
- B. x = 25[(s β 2) Γ· t] β 3ty
- C. x = [1 Γ· (s β 2)3ty]
- D. x = [5(s β 2) 2 Γ· 3ty] Γ t
The amount A to which a principal P amounts at r% compound interest for n years is given by the formula A = P(1 + (r Γ· 100)\(^n\). Find A, if P = 126, r = 4 and n = 2.
- A. N132.50K
- B. N136.30K
- C. N125.40K
- D. N257.42K
Find the equation of a line which is form origin and passes through the point (β3, β4)
- A. y = \( \frac{3x}{4} \)
- B. y = \( \frac{4x}{3} \)
- C. y = \( \frac{2x}{3} \)
- D. y = \( \frac{x}{2} \)
The first and last term of a linear sequence (AP) are 6 and 10 respectively. If the sum of the sequence is 40. Find the number of terms
- A. nth = 3
- B. nth = 4
- C. nth = 5
- D. nth = 6
Solve the equation \( 3x^2 β 4x β 5 = 0 \)
- A. x = 1.75 or β 0.15
- B. x = 2.12 or β 0.79
- C. x = 1.5 or β 0.34
- D. x = 2.35 or β1.23
A man with an annual salary of N2000, has allowances of N600. If Income Tax is 5%. How much income tax expenses does he pay each year?
- A. 15
- B. 50
- C. 70
- D. 25
If x + y = 90 simplify \((sinx + siny)^2\)β2sinxsiny
- A. 1
- B. 0
- C. 2
- D. -1
Find the total surface area of a cylinder of base radius 5cm and length 7cm ( Ο = 3.14)
- A. 17.8cm2
- B. 15.8cm2
- C. 75.4cm2
- D. 54.7cm2
- E. \(377.0cm^{2}\)
Simplify log101.5 + 3 log102 β log100.3
- A. log104
- B. log1040
- C. log10-40
- D. log104-
Find the x and z intercepts of the graph of 3x – z \(\leq\) 9
- A. (3, -9)
- B. (-3, 9)
- C. (-3, -9)
- D. (-3, 0)
X and Y are two sets such that n(X) = 15, n(Y) = 12 and n{X β© Y} = 7. Find β©{X βͺ Y}
- A. 21
- B. 225
- C. 15
- D. 20
If three staff of Myschool Limited agreed to share their salary arrears in the ration of their ages, which are 18 years, 20 years, 22 years respectively. If the sum of the money collected is N120,000.00K, How much does the second staff received?
- A. N36,000
- B. N44,000
- C. N40,000
- D. N15,000
Factorize x2 + 9x + 20
- A. (x β 5) 2
- B. (x + 5)(x + 4)
- C. (x β 5)(x + 3)
- D. (x + 3) 2
Simplify 1ΒΌ Γ· (2 Γ· ΒΌ of 28)
- A. 1 \( \frac{3}{8}\)
- B. 2 \( \frac{3}{4}\)
- C. 4 \( \frac{3}{8}\)
- D. 3 \( \frac{1}{5}\)
In a town of 6250 inhabitants, there were 62 births during 1984. Find the percentage birth rate
- A. 3%
- B. 1.0%
- C. 2.5%
- D. 5.40%