Higher

Four classes in order have frequencies 11, 3, 12, 3. Write down the cumulative frequency at the end of the third class.

Write 72 in the form a b, where b is as small as possible.Write sqrt(72) in the form a sqrt(b), where b is as small as possible.

For the curve y = 20/x, work out y when x = 2, and write down the equation of its vertical asymptote.

A block has volume 30 cm³ and density 8 g/cm³. Work out its mass.A block has volume 30 cm^3 and density 8 g/cm^3. Work out its mass.

Two similar solids have lengths in the ratio 1 : 4. The larger has a volume of 2304 cm³. Work out the volume of the smaller.Two similar solids have lengths in the ratio 1 : 4. The larger has a volume of 2304 cm^3. Work out the volume of the smaller.