Search

...2...Session 1: Working with numbers: 1.1 Positive numbers and place value - [Described image] Figure 1 Place value Let’s look at positive numbers in more detail. The place value of a digit in a number depends on its position or place in the number: The value of 8 in 58 is 8 units. The value of 3 in 34 is 3 tens. The value of 4 in 435 is 4 hundreds. The value of 6 in 6...

...2, 4 and 2. The mean number of children per person is the number we’d each have if they were divided out evenly between the four of us. In total there are 8 children, so the mean number is 8 divided by 4 - which is, of course, 2. What happens if a new colleague joins us, and the new colleague has 3 children? Well, now the total number of children is 11, and the mean...

...2 squares long. If you measure it on the plan, you will find it is 1 square plus (or 0.8) of a square long. It is also or 0.8 of a square wide on the plan. This means that in reality its dimensions are 1.8 m by 0.8 m. As the doorframe is about 1 square wide on the plan, the actual door is about 1 m wide. Example 2 (a) The scale on a diagram is such that 2 cm represent 1...

...2 and 3 of the malware. Stage 2 Stage 2 consists of a number of programs used to collect data from the router’s network. It steals files and sends them to its controllers as well as performing commands that can affect the operation of computers. Stage 2 also contains a ‘self-destruct’ feature that can render a router useless by overwriting a crucial piece of...

...2 develops a strategy for solving systems of linear equations. Section 3 looks at the algebra of matrices and shows that matrices can be thought of as a generalisation of vectors. Section 4 introduces the inverse of a matrix. Section 5 uses systems of linear equations to introduce the determinant of a square matrix...In this free course, matrices are used as a concise way...

...2...Session 1: Working with numbers: 1.1 Positive numbers and place value - [Described image] Figure 1 Place value Let’s look at positive numbers in more detail. The place value of a digit in a number depends on its position or place in the number: The value of 8 in 58 is 8 units. The value of 3 in 34 is 3 tens. The value of 4 in 435 is 4 hundreds. The value of 6 in...