Foundation Plus

Grouped data has five classes of width 10, the first being 10 < x ≤ 20. The frequencies in order are 21, 3, 16, 11, 7. Write down the modal class.Grouped data has five classes of width 10, the first being 10 < x <= 20. The frequencies in order are 21, 3, 16, 11, 7. Write down the modal class.

Write 6¹⁰ x 6³ as a single power of 6.Write 6^10 x 6^3 as a single power of 6.

The lines y = -3x - 12 and y = x + 4 are drawn. Write down the coordinates of the point where they cross.

Red and blue marbles are in the ratio 2 : 9. There are 24 red marbles. How many marbles are there altogether?

A cone has base radius 5 cm and vertical height 24 cm. Work out its volume, leaving your answer in terms of π.A cone has base radius 5 cm and vertical height 24 cm. Work out its volume, leaving your answer in terms of pi.