Waec Mathematics Past Questions For Year 2022
Question 11
If 5x + 3y=4 and 5x-3y= 2, what is the value of (25x\(^2\) -9y\(^2\))?
- A. 20
- B. 16
- C. 2
- D. 8
Question 12
The length of a piece of stick is 1.75 m. A boy measured it as 1.80 m. Find the percentage error
- A. 4\(\frac{4}{7}\)
- B. 2\(\frac{6}{7}\)
- C. 2\(\frac{7}{9}\)
- D. 4\(\frac{7}{9}\)
Question 13
Three boys shared D 10,500.00 in the ratio 6:7:8. Find the largest share.
- A. 4000
- B. 5000
- C. 4500
- D. 3500
Question 14
If a = 3 and b = -7, find the value of \(\frac{5b+(a+b)^2}{(a-b)^2}\)
- A. 0.51
- B. 0.91
- C. -0.19
- D. -0.51
Question 15
An exterior angle of a regular polygon is 22.5°. Find the number of sides.
- A. 13
- B. 14
- C. 15
- D. 16
