Consumer theory examines how consumers allocate income and make purchasing decisions. All economic activity takes place within the context of limitations. Consumers, therefore, need to make trade-offs ...

It is important to remember other angles rules, such as angles on a straight line add up to 180°, and to recognise angles in parallel lines. Make sure you are confident in applying Pythagoras’ theorem ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Somer G. Anderson is CPA, doctor of accounting, and an accounting and finance professor who ...

Abstract: The problem of estimating zero-sequence parameters of a parallel transmission line from fault data is considered. This paper analytically demonstrates that the zero-sequence impedances of a ...

In geometry, parallel lines are straight lines that run alongside one another and never intersect. They share a common trait, which is that they maintain a constant distance between them. Determining ...

Prove two triangles are congruent by showing they satisfy one of four criteria. Find missing lengths by using the scale factor. The relationship between similar shapes may be expressed as a ratio.

Parents are using every means available to boost their children's test results. Zhao Xinying reports. Of the many children Chen Hongwei has taught and helped study at home, one 12-year-old boy stands ...

Abstract: With the rapid development of modern high-speed circuit technology, electronic devices have the properties of high data transmission rates, steeper edge changing rates, and large-scale ...

3 The Second Affiliated Hospital of Harbin Medical University, China 4 Huizhou First Hospital, China 5 The First Affiliated Hospital of Guangxi Medical University, China 6 Stomatology Hospital of ...