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How do I skecth a grpah of y = x^2 - 7x + 10?

To plot any graph, you usually only need to find a few points that are on that graph to the sketch it. With a quadratic like this, the easiest way to do this is to find where the graph crosses the x and y...

Answered by Ilaria B. • Maths tutor

5873 Views

Amazon currently sells 100 000 copies per year of an e-book at $14.99. The company estimates that customers would buy 174 000 copies of the same e-book at a price of $9.99. What is the effect on Price elasticity of Demand and Total

Price elasticity of demand (PED)= %change in Quantity Demanded/ %change in price
So, from the question we can see that the PED is elastic as there is a significant increase in demand for the e-book w...

Answered by Connor O. • Economics tutor

2211 Views

In a lab a hydrogen spectral line is observed to have a wavelength of 656nm. This line is observed in a distance galaxy to have a wavelength of 661nm, what is the recessional velocity of the galaxy?

This question is dealing with phenomena of Redshift, where wavelengths are shifted due to movement between observer and event. The key information to extract from the question is we have a rest wavelength...

Answered by Jamie M. • Physics tutor

4521 Views

How should I approach independent-research coursework essays?

Firstly, the text you choose to base your independent research on is very important. You should always choose one that you will enjoy analysing, one that definitely interacts with your chosen theory and o...

Answered by Wendy M. • English Literature tutor

3134 Views

What is mitosis?

Mitosis is the DNA replication stage in somatic cells (non sex cells). It involves replication of DNA and ONE division of DNA to produce two genetically identical daughter cells. The stages specific to mi...

Answered by Selina N. • Biology tutor

2882 Views