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Toilet rolls come in packs of 4 and 9.
The 4-pack is priced at £2.25.
The 9-pack is priced at £4.50.
By calculating the price per roll, determine which pack is better value.
Show your working.

How do you summarize data in a two-way frequency table?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?