Daily Practice - Higher Plus

y is inversely proportional to x². When x = 3, y = 100. Work out y when x = 5.y is inversely proportional to x^2. When x = 3, y = 100. Work out y when x = 5.

A triangle has sides of 15 cm and 12 cm and an area of 90.00 cm². Work out the acute angle between those two sides, to the nearest degree.A triangle has sides of 15 cm and 12 cm and an area of 90.00 cm^2. Work out the acute angle between those two sides, to the nearest degree.

A bag holds 7 counters, r of them red. Two are taken without replacement and P(both red) = 1/7. Work out r.

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

Rationalise the denominator of 35/7, giving your answer in its simplest form.Rationalise the denominator of 35/sqrt(7), giving your answer in its simplest form.