which of the following is not quadratic expression?
- A. \(y = 2x^2 - 5x\)
- B. \(y=x(x-5)\)
- C. \(y = x^2 - 5\)
- D. y = 5(x-1)
If \(2x^2 + kx – 14 = (x+2)(2x-7)\), find the value of K
- A. -3
- B. 5
- C. 9
- D. 11
if \(\frac{4m+3n}{4m-3n}=\frac{5}{2}\), find the ratio m:n
- A. 7:4
- B. 4:3
- C. 3:4
- D. 4:7
If \(\frac{y-3}{2}<\frac{2y-1}{3}\), which of the following is true?
- A. y > 7
- B. y < -7
- C. y > -7
- D. y < 7
Simplify \(\frac{2x-1}{3}-\frac{x+3}{2}\)
- A. \(\frac{x+3}{6}\)
- B. \(\frac{x+8}{6}\)
- C. \(\frac{x-11}{6}\)
- D. \(\frac{x-4}{6}\)
Factorize \(6x^2 + 7x – 20\)
- A. (6x - 5)(x + 4)
- B. 2(3x-5)(x+2)
- C. (3x+4)(2x-5)
- D. (3x-4)(2x+5)
Evaluate \(\frac{x^2 + x – 2}{2x^2 + x -3}\) when x = -1
- A. -2
- B. -1
- C. \(-\frac{1}{2}\)
- D. 1
Given that y = px + q and y = 5 when x = 3, while y = 4 when x = 2, find the value of p and q.
- A. p = 1, q = 3
- B. p = 1, q = 2
- C. p = -2, q = 3
- D. p = 3, q = -2
A man is four times as old as his son. The difference between their ages is 36 years Find the sum of their ages
- A. 45 years
- B. 48 years
- C. 60 years
- D. 74 years
Evaluate \(\frac{1}{2}+\frac{3}{4}of\frac{2}{5}\div 1\frac{3}{5}\)
- A. \(\frac{15}{16}\)
- B. \(\frac{11}{16}\)
- C. \(\frac{49}{50}\)
- D. \(3\frac{1}{5}\)
The nth term of a sequence is \(2^{2n-1}\). Which term of the sequence is \(2^9?\)
- A. 3rd
- B. 4th
- C. 5th
- D. 6th
Evaluate \(5\frac{2}{5}\times \left(\frac{2}{3}\right)^2\div\left(1\frac{1}{2}\right)^{-1}\)
- A. \(\frac{8}{25}\)
- B. \(\frac{12}{25}\)
- C. \(3\frac{3}{5}\)
- D. \(4\frac{1}{8}\)
A boy estimated his transport fare for a journey as N190 instead of N200. Find the percentage error in his estimate
- A. 95%
- B. 47.5%
- C. 5.26%
- D. 5%
In a bag of oranges, the ratio of the good ones to the bad ones is 5:4. If the number of bad oranges in the bag is 36, how many oranges are there in the altogether?
- A. 81
- B. 72
- C. 54
- D. 45
Express 0.0462 in standard form
- A. 0.460 x 10-1
- B. 0.462 x 10-2
- C. 4.62 x 10-1
- D. 4.62 x 10-2
If N varies directly as M and N = 8 when M = 20 find M when N = 7
- A. 13
- B. 15
- C. \(17\frac{1}{2}\)
- D. \(18\frac{1}{2}\)
In a class of 80 students, every students studies Economics or Geography or both. If 65 students study Economics and 50 study Geography, how many study both subjects?
- A. 15
- B. 30
- C. 35
- D. 45
Evaluate \((20_{three})^2 – (11_{three})^2\) in base three
- A. 101
- B. 121
- C. 202
- D. 2020
Which of the following correctly expresses 48 as a product of prime factors?
- A. 3 x 4 x 4
- B. 2 x 3 x 8
- C. 2 x 2 x 2 x 3 x 4
- D. 2 x 2 x 2 x 2 x 3