Harry is driving from Christchurch to Nelson – a distance of 420 kilometres.
• He stops for petrol in Kaikoura, which is 4/7 of the distance from Christchurch.
• The petrol tank holds 55 litres and is 2/11 full at Kaikoura before he buys more petrol.
• Harry buys 40 litres of petrol at Kaikoura.
• He drives the rest of the way to Nelson and uses 1 litre of petrol every 12 kilometres.
How much petrol is left in the tank when Harry gets to Nelson?

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.