Daily Practice - Higher

A box plot has minimum 11, lower quartile 21, median 23, upper quartile 30 and maximum 33. Work out the interquartile range.

Work out (12 x 10⁷) / (2 x 10³). Give your answer in standard form.Work out (12 x 10^7) / (2 x 10^3). Give your answer in standard form.

For the curve y = -9/x, work out y when x = 1, and write down the equation of its vertical asymptote.

y is directly proportional to x². When x = 5, y = 75. Work out y when x = 4.y is directly proportional to x^2. When x = 5, y = 75. Work out y when x = 4.

Two similar solids have lengths in the ratio 1 : 2. The larger has a volume of 72 cm³. Work out the volume of the smaller.Two similar solids have lengths in the ratio 1 : 2. The larger has a volume of 72 cm^3. Work out the volume of the smaller.