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Factorising and Expanding Brackets

Factorising equations:

Lets look at the example:   Factorise 3x+21 

In order to factorise this equation, we need to find a common factor of both 3x and 21. ...

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Answered by Hannah M. Maths tutor
9501 Views

Athenodorus legit titulum auditoque pretio, quia suspecta vilitas: What was Athenodorus suspicious about?

Subject: Latin/GCSE

Q: Athenodorus legit titulum auditoque pretio, quia suspecta vilitas: What was Athenodorus suspicious about?

A:...

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Answered by Hiwot A. Latin tutor
4160 Views

A lamp has a rating of 18V 9W. How much energy is transferred to the bulb in 5 minutes? Calculate the current through it when connected to a 18V supply.

The first question comes from the realisation that the power rating, "9W" represents 9 joules being supplied every second and so can be written as 9J/s and so in 5 minutes (o...

AN
Answered by Alexander N. Physics tutor
4971 Views

Resistors of 5 ohms and 10 ohms are connected in series with a battery supplying 3 volts. What is the total resistance ? And calculate the current in the circuit.

For the first part of the question we note that the resistors are in series, this means we can simply add together the resistance, giving a value of:
15 ohms

For the second part we ...

AN
Answered by Alexander N. Physics tutor
19949 Views

On a see-saw Mary, weight 600N balances John, weight 200N when she sits 1.5m away from the pivot. How far from the pivot is John?

Using the knowledge that the moments are balanced, we can create an equation to calculate the distance John is from the pivot:

600N1.50m = 200N(distance)
(600/200)*1.5 = di...

AN
Answered by Alexander N. Physics tutor
12650 Views

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