Which of the following angular inequalities defines an obtuse angle?

If y + \(\frac{1}{y}\) = 9, evaluate y² + \(\frac{1}{y^2}\)

If N25,000.00 is kept in a bank at the rate of 2% simple interest, how much will it amount to at the end of 5 years?

Construct a quadratic equation whose roots are -\(\frac{3}{2}\) and 7

A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre?