Daily Practice - Higher Plus

The probability of winning a game is 2/5. A player expects 10 wins. How many games did they play?

A histogram has four 10-wide classes from 0, with frequency densities 2, 3, 0.5, 1. Which class contains the median?

A block has mass 520 g (to the nearest 10 g) and volume 18 cm³ (to the nearest cm³). Work out the upper bound of its density, to 2 decimal places.A block has mass 520 g (to the nearest 10 g) and volume 18 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.

In an algebraic proof, how would you write the number two more than an even number in terms of an integer n?

y is inversely proportional to x². When x = 4, y = 4. Work out y when x = 2.y is inversely proportional to x^2. When x = 4, y = 4. Work out y when x = 2.