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Paul travels from Rye to Eston at an average speed of 90 km/h. He travels for T hours. Mary makes the same journey at an average speed of 70 km/h. She travels for 1 hour longer than Paul. Work out the value of T

As distance is equal to speed multiplied by time, the distance Paul has traveled is 90 multiplied by T, or 90T.
As Mary is making the same journey, she travels the same distance. The distance she...

Answered by Guy L. • Maths tutor

13627 Views

How does a HDD (Hard drive disk) work?

A HDD is a mechanical form of storage, using electromagnetism to store and write data.
Mechanical drives are very prone to data lose and breaking when moved around, due to their mechanical nature.

Answered by Harvey B. • Computing tutor

4382 Views

Define tanh(t) in terms of exponentials

Whenever you have a define by exponentials question start with:

sinh(t)=0.5(e^t-e^-t) and cosh(t)=0.5(e^t+e^-t)

We know tanh(...

Answered by Nathaniel S. • Further Mathematics tutor

4026 Views

How do I properly introduce myself using a formal register in Italian?

Differently from English, Italian has a specific form to use when addressing people in a formal way. Generally speaking you have to use the third singular person of a verb (Egli-Ella-Lui-Lei) instead o...

Answered by Alessandro V. • Italian tutor

6110 Views

How does the ablative case work?

The easiest way to explain it is that it is the 'adverbial' case. This means that it will always tell us something more about how an action (described by the verb) took place.

One of the ...

Answered by Stephen J. • Latin tutor

5523 Views