Daily Practice - Higher Plus

A block has mass 900 g (to the nearest 10 g) and volume 7 cm³ (to the nearest cm³). Work out the upper bound of its density, to 2 decimal places.A block has mass 900 g (to the nearest 10 g) and volume 7 cm^3 (to the nearest cm^3). Work out the upper bound of its density, to 2 decimal places.

The curve y = cos x° is drawn for 0 ≤ x ≤ 360. Write down the value of y when x = 360.The curve y = cos x° is drawn for 0 <= x <= 360. Write down the value of y when x = 360.

y is inversely proportional to x². When x = 5, y = 36. Work out y when x = 3.y is inversely proportional to x^2. When x = 5, y = 36. Work out y when x = 3.

A triangle has sides 17 cm, 6 cm and 16 cm. Work out the angle opposite the 17 cm side, to 1 decimal place.

A bag holds 2 red and n blue counters. The probability of taking a red is 1/2. Work out n.