Waec Further Mathematics 2020 Past Questions and Answers

Question 16:

• WAEC 2020

Which of the following is not an equation of a circle?

A. 3x\(^2\) +3y\(^2\) + 5x + 7y =5
B. X\(^2\) + y\(^2\) + 5x + 4y = 0
C. 5x\(^2\) + 5y\(^2\) - 16 = 0
D. X\(^2\) - y\(^2\) + 3x - 5y = 2

Question 17:

• WAEC 2020

A function f defined by f : x -> x\(^2\) + px + q is such that f(3) = 6 and f(3) = 0. Find the value of q.

A. - 9
B. - 6
C. 15
D. 21

Question 18:

• WAEC 2020

In what interval is the function f : x -> 2x - x\(^2\) increasing?

A. X = 1
B. X < 1
C. X > 1
D. 0 < x < 1

Question 19:

• WAEC 2020

A force of 230N acts in its direction 065\(^o\). Find its horizontal component.

A. 208.5N
B. 197.2N
C. 118.5N
D. 97.2

Question 20:

• WAEC 2020

Calculate the variance of \(\sqrt{2}\), (1 + \(\sqrt{2}\)) and (2 + \(\sqrt{2}\))

A. \(\sqrt{\frac{2}{3}}\)
B. \(\frac{2}{3}\)
C. 2