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...work and why this is important to our choice of drinks, and go in search of the best hangover cure. The Open University would really appreciate a few minutes of your time to tell us about yourself and your expectations for the course before you begin, in our optional start-of-course survey. Once you complete the course we would also value your feedback and suggestions for...

...working in ‘Math’ mode, and the word Math will be shown near the right-hand side of the top of the calculator display, as shown in Figure 4 below. Math mode is the recommended way of using your calculator during this course as it allows mathematics to be entered and displayed in a similar way to how you would write it on paper. [The figure shows the display on a...

...work with a diagram length of 1 cm. As 2 cm represent 1 m, 1 cm will represent 0.5 m. Then 6 cm represent 0.5 × 6 m = 3 m, 0.2 cm represent 0.5 × 0.2 m = 0.1 m, 3 cm represent 0.5 × 3 m = 1.5 m, 3.6 cm represent 0.5 × 3.6 m = 1.8 m, 0.5 cm represent 0.5 × 0.5 m = 0.25 m. (b) Here 1 m in reality is represented by 2 cm on the diagram. So 2.3 m are represented by 2.3 ×...

...work. All this is because of the ‘headway’ – what the station’s control team call the turnaround time between getting trains in and out of the station. In order to keep this massive operation on schedule, they must keep the headway period to the minimum time possible. In peak hours, trains enter and exit each platform every three minutes and thirty seconds....