Daily Practice - Higher Plus

The probability of winning a game is 3/4. A player expects 36 wins. How many games did they play?

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

A block has mass 460 g (to the nearest 10 g) and volume 10 cm³ (to the nearest cm³). Work out the upper bound of its density, to 2 decimal places.A block has mass 460 g (to the nearest 10 g) and volume 10 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.

Solve x² + y² = 841 and y = x - 1 simultaneously.Solve x^2 + y^2 = 841 and y = x - 1 simultaneously.

y is inversely proportional to x². When x = 3, y = 4. Work out y when x = 2.y is inversely proportional to x^2. When x = 3, y = 4. Work out y when x = 2.