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Solve the simultaneous equations: 2x+2y=12 x-y=8 You must show your working

The first thing we want to do is change the first equation so it's either all x's or all y's, we don't want a mixture. Now looking at the bottom equation, we can rearrange it by adding y to both sides. This ...
KA
Answered by Kasim A. • Maths tutor
5986 Views

When a toothbrush is charging, p.d. across the primary coil is 230 V, p.d. across the secondary coil is 7.2 V. The primary coil in the charging base has 575 turns of wire on its coil. Find the number of turns on the secondary coil inside the toothbrush.

This question is on transformers. This is clear because there is a primary and secondary coil and a different voltage between the 2 coils. Transformers induce a changing voltage in a coil. The known equation...
JT
Answered by Jayani T. • Physics tutor
6242 Views

How am I going to remember to get all of these different factors into essays in my exam?

Arguably more important than practicing writing full essays is practicing essay plans. If you can get into a good routine of producing concise plans which make sense to you and reflect all of the main points...
HR
Answered by Hannah R. • English tutor
2705 Views

Décrivez ton stage en entreprise.

Own answer of the candidate. Use multiple tenses, with checklist. Use different verbs and try not to repeat. Use technical language - les avocats, assister instead of aller à etc.
HH
Answered by Henry H. • French tutor
2981 Views

Examine the short term causes of Russia's 1917 Revolution.

The February revolution in Russia toppled the Romanov dynasty that had been ruling for 300 years. The revolution thereby was an extremely important event in Russia's history. This revolution, which happened ...
SG
Answered by Sasha G. • History tutor
40175 Views