Daily Practice - Higher Plus

The probability of winning a game is 4/5. A player expects 104 wins. How many games did they play?

On a histogram the bar for 30 < x ≤ 50 has a frequency density of 0.4. How many values are in that class?On a histogram the bar for 30 < x <= 50 has a frequency density of 0.4. How many values are in that class?

A block has mass 560 g (to the nearest 10 g) and volume 9 cm³ (to the nearest cm³). Work out the upper bound of its density, to 2 decimal places.A block has mass 560 g (to the nearest 10 g) and volume 9 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.

A quadratic sequence starts 8, 19, 40, 71. Work out the second difference, and the coefficient of n².A quadratic sequence starts 8, 19, 40, 71. Work out the second difference, and the coefficient of n^2.

y is directly proportional to x³. When x = 4, y = 192. Work out y when x = 3.y is directly proportional to x^3. When x = 4, y = 192. Work out y when x = 3.